Reference list:
1. Concato J, Shah N, Horwitz RI. Randomized, controlled trials, observational studies, and the hierarchy of research designs. The New England journal of medicine. 2000;342(25):1887-92.
2. Hamulyák EN, de Jong PG, Scheres LJJ, Ewington LJ, Middeldorp S, Quenby S, Goddijn M. Progress of the ALIFE2 study: A dynamic road towards more evidence. Thromb Res. 2020;190:39-44.
3. Chapman SJ, Shelton B, Mahmood H, Fitzgerald JE, Harrison EM, Bhangu A. Discontinuation and non-publication of surgical randomised controlled trials: observational study. BMJ (Clinical research ed). 2014;349:g6870.
4. Kasenda B, von Elm E, You J, Blümle A, Tomonaga Y, Saccilotto R, et al. Prevalence, Characteristics, and Publication of Discontinued Randomized Trials. JAMA. 2014;311(10):1045-52.
5. McDonald AM, Knight RC, Campbell MK, Entwistle VA, Grant AM, Cook JA, et al. What influences recruitment to randomised controlled trials? A review of trials funded by two UK funding agencies. Trials. 2006;7:9.
6. Mills EJ, Seely D, Rachlis B, Griffith L, Wu P, Wilson K, et al. Barriers to participation in clinical trials of cancer: a meta-analysis and systematic review of patient-reported factors. The Lancet Oncology. 2006;7(2):141-8.
7. Ellis PM. Attitudes towards and participation in randomised clinical trials in oncology: a review of the literature. Annals of oncology : official journal of the European Society for Medical Oncology. 2000;11(8):939-45.
8. Abraham NS, Young JM, Solomon MJ. A systematic review of reasons for nonentry of eligible patients into surgical randomized controlled trials. Surgery. 2006;139(4):469-83.
9. Lasagna L. Problems in publication of clinical trial methodology. Clin Pharmacol Ther. 1979;25(5 Pt 2):751-3.
10. Al-Shahi Salman R, Beller E, Kagan J, Hemminki E, Phillips RS, Savulescu J, et al. Increasing value and reducing waste in biomedical research regulation and management. Lancet. 2014;383(9912):176-85.
11. [An assessment of Dutch obstetrics: implementation of 6 randomised trials within a national network]. Ned Tijdschr Geneeskd. 2007;151(13):771-5.
12. Elm Ev, Altman DG, Egger M, Pocock SJ, Gøtzsche PC, Vandenbroucke JP. Strengthening the reporting of observational studies in epidemiology (STROBE) statement: guidelines for reporting observational studies. BMJ (Clinical research ed). 2007;335(7624):806-8.
13. Kop PAL, van Wely M, Nap A, Soufan AT, de Melker AA, Mol BWJ, et al. Intracervical insemination versus intrauterine insemination with cryopreserved donor sperm in the natural cycle: a randomized controlled trial. Hum Reprod. 2022;37(6):1175-82.
14. Kaandorp SP, Goddijn M, van der Post JA, Hutten BA, Verhoeve HR, Hamulyák K, et al. Aspirin plus heparin or aspirin alone in women with recurrent miscarriage. The New England journal of medicine. 2010;362(17):1586-96.
15. Quenby S, Booth K, Hiller L, Coomarasamy A, de Jong PG, Hamulyák EN, et al. Heparin for women with recurrent miscarriage and inherited thrombophilia (ALIFE2): an international open-label, randomised controlled trial. Lancet. 2023;402(10395):54-61.
16. Kaandorp JJ, Benders MJ, Schuit E, Rademaker CM, Oudijk MA, Porath MM, et al. Maternal allopurinol administration during suspected fetal hypoxia: a novel neuroprotective intervention? A multicentre randomised placebo controlled trial. Arch Dis Child Fetal Neonatal Ed. 2015;100(3):F216-23.
17. Lim AC, Schuit E, Bloemenkamp K, Bernardus RE, Duvekot JJ, Erwich J, et al. 17α-hydroxyprogesterone caproate for the prevention of adverse neonatal outcome in multiple pregnancies: a randomized controlled trial. Obstet Gynecol. 2011;118(3):513-20.
18. Zaat T, de Bruin JP, Goddijn M, van Baal M, Benneheij S, Brandes M, et al. Home-based monitoring of ovulation to time frozen embryo transfers in the Netherlands (Antarctica-2): an open-label, nationwide, randomised, non-inferiority trial. Lancet. 2023;402(10410):1347-55.
19. Vis JY, van Baaren GJ, Wilms FF, Oudijk MA, Kwee A, Porath MM, et al. Randomized comparison of nifedipine and placebo in fibronectin-negative women with symptoms of preterm labor and a short cervix (APOSTEL-I Trial). Am J Perinatol. 2015;32(5):451-60.
20. Roos C, Spaanderman ME, Schuit E, Bloemenkamp KW, Bolte AC, Cornette J, et al. Effect of maintenance tocolysis with nifedipine in threatened preterm labor on perinatal outcomes: a randomized controlled trial. Jama. 2013;309(1):41-7.
21. van Vliet EOG, Nijman TAJ, Schuit E, Heida KY, Opmeer BC, Kok M, et al. Nifedipine versus atosiban for threatened preterm birth (APOSTEL III): a multicentre, randomised controlled trial. Lancet. 2016;387(10033):2117-24.
22. Nijman TA, van Vliet EO, Naaktgeboren CA, Oude Rengerink K, de Lange TS, Bax CJ, et al. Nifedipine versus placebo in the treatment of preterm prelabor rupture of membranes: a randomized controlled trial: Assessment of perinatal outcome by use of tocolysis in early labor-APOSTEL IV trial. Eur J Obstet Gynecol Reprod Biol. 2016;205:79-84.
23. Klumper J, Breebaart W, Roos C, Naaktgeboren CA, van der Post J, Bosmans J, et al. Study protocol for a randomised trial for atosiban versus placebo in threatened preterm birth: the APOSTEL 8 study. BMJ open. 2019;9(11):e029101.
24. Landman A, de Boer MA, Visser L, Nijman TAJ, Hemels MAC, Naaktgeboren CN, et al. Evaluation of low-dose aspirin in the prevention of recurrent spontaneous preterm labour (the APRIL study): A multicentre, randomised, double-blinded, placebo-controlled trial. PLoS Med. 2022;19(2):e1003892.
25. Custers IM, Flierman PA, Maas P, Cox T, Van Dessel TJ, Gerards MH, et al. Immobilisation versus immediate mobilisation after intrauterine insemination: randomised controlled trial. BMJ (Clinical research ed). 2009;339:b4080.
26. Dancet EAF, D’Hooghe TM, Dreischor F, van Wely M, Laan ETM, Lambalk CB, et al. The ’Pleasure&Pregnancy’ web-based interactive educational programme versus expectant management in the treatment of unexplained subfertility: protocol for a randomised controlled trial. BMJ open. 2019;9(7):e025845.
27. van der Ploeg JM, Oude Rengerink K, van der Steen A, van Leeuwen JH, Stekelenburg J, Bongers MY, et al. Transvaginal prolapse repair with or without the addition of a midurethral sling in women with genital prolapse and stress urinary incontinence: a randomised trial. Bjog. 2015;122(7):1022-30.
28. van der Ploeg JM, Oude Rengerink K, van der Steen A, van Leeuwen JH, van der Vaart CH, Roovers JP. Vaginal prolapse repair with or without a midurethral sling in women with genital prolapse and occult stress urinary incontinence: a randomized trial. Int Urogynecol J. 2016;27(7):1029-38.
29. Dreyer K, Lier MC, Emanuel MH, Twisk JW, Mol BW, Schats R, et al. Hysteroscopic proximal tubal occlusion versus laparoscopic salpingectomy as a treatment for hydrosalpinges prior to IVF or ICSI: an RCT. Hum Reprod. 2016;31(9):2005-16.
30. Boers KE, Vijgen SM, Bijlenga D, van der Post JA, Bekedam DJ, Kwee A, et al. Induction versus expectant monitoring for intrauterine growth restriction at term: randomised equivalence trial (DIGITAT). BMJ (Clinical research ed). 2010;341:c7087.
31. Mol F, van Mello NM, Strandell A, Strandell K, Jurkovic D, Ross J, et al. Salpingotomy versus salpingectomy in women with tubal pregnancy (ESEP study): an open-label, multicentre, randomised controlled trial. Lancet. 2014;383(9927):1483-9.
32. Vodegel EV, Zwolsman SE, Vollebregt A, Duijnhoven RG, Bosmans JE, Speksnijder L, et al. Cost-Effectiveness of perioperative Vaginally Administered estrogen in postmenopausal women undergoing prolapse surgery (EVA trial): study protocol for a multicenter double-blind randomized placebo-controlled trial. BMC Womens Health. 2021;21(1):439.
33. Wessel JA, Mochtar MH, Besselink DE, Betjes H, de Bruin JP, Cantineau AEP, et al. Expectant management versus IUI in unexplained subfertility and a poor pregnancy prognosis (EXIUI study): a randomized controlled trial. Hum Reprod. 2022;37(12):2808-16.
34. van Welie N, van Rijswijk J, Dreyer K, van Hooff MHA, de Bruin JP, Verhoeve HR, et al. Can hysterosalpingo-foam sonography replace hysterosalpingography as first-choice tubal patency test? A randomized non-inferiority trial. Hum Reprod. 2022;37(5):969-79.
35. Voormolen DN, DeVries JH, Sanson RME, Heringa MP, de Valk HW, Kok M, et al. Continuous glucose monitoring during diabetic pregnancy (GlucoMOMS): A multicentre randomized controlled trial. Diabetes Obes Metab. 2018;20(8):1894-902.
36. Dreyer K, van Rijswijk J, Mijatovic V, Goddijn M, Verhoeve HR, van Rooij IAJ, et al. Oil-Based or Water-Based Contrast for Hysterosalpingography in Infertile Women. The New England journal of medicine. 2017;376(21):2043-52.
37. Bistervels IM, Buchmüller A, Wiegers HMG, F NÁ, Tardy B, Donnelly J, et al. Intermediate-dose versus low-dose low-molecular-weight heparin in pregnant and post-partum women with a history of venous thromboembolism (Highlow study): an open-label, multicentre, randomised, controlled trial. Lancet. 2022;400(10365):1777-87.
38. Koopmans CM, Bijlenga D, Groen H, Vijgen SM, Aarnoudse JG, Bekedam DJ, et al. Induction of labour versus expectant monitoring for gestational hypertension or mild pre-eclampsia after 36 weeks’ gestation (HYPITAT): a multicentre, open-label randomised controlled trial. Lancet. 2009;374(9694):979-88.
39. Broekhuijsen K, van Baaren GJ, van Pampus MG, Ganzevoort W, Sikkema JM, Woiski MD, et al. Immediate delivery versus expectant monitoring for hypertensive disorders of pregnancy between 34 and 37 weeks of gestation (HYPITAT-II): an open-label, randomised controlled trial. Lancet. 2015;385(9986):2492-501.
40. Vervoort AJ, Van der Voet LF, Witmer M, Thurkow AL, Radder CM, van Kesteren PJ, et al. The HysNiche trial: hysteroscopic resection of uterine caesarean scar defect (niche) in patients with abnormal bleeding, a randomised controlled trial. BMC Womens Health. 2015;15:103.
41. Keulen JK, Bruinsma A, Kortekaas JC, van Dillen J, Bossuyt PM, Oudijk MA, et al. Induction of labour at 41 weeks versus expectant management until 42 weeks (INDEX): multicentre, randomised non-inferiority trial. BMJ (Clinical research ed). 2019;364:l344.
42. Bensdorp AJ, Tjon-Kon-Fat RI, Bossuyt PM, Koks CA, Oosterhuis GJ, Hoek A, et al. Prevention of multiple pregnancies in couples with unexplained or mild male subfertility: randomised controlled trial of in vitro fertilisation with single embryo transfer or in vitro fertilisation in modified natural cycle compared with intrauterine insemination with controlled ovarian hyperstimulation. BMJ (Clinical research ed). 2015;350:g7771.
43. Bakker JJ, Verhoeven CJ, Janssen PF, van Lith JM, van Oudgaarden ED, Bloemenkamp KW, et al. Outcomes after internal versus external tocodynamometry for monitoring labor. The New England journal of medicine. 2010;362(4):306-13.
44. Rutten MJ, van Meurs HS, van de Vrie R, Gaarenstroom KN, Naaktgeboren CA, van Gorp T, et al. Laparoscopy to Predict the Result of Primary Cytoreductive Surgery in Patients With Advanced Ovarian Cancer: A Randomized Controlled Trial. J Clin Oncol. 2017;35(6):613-21.
45. Mutsaerts MA, van Oers AM, Groen H, Burggraaff JM, Kuchenbecker WK, Perquin DA, et al. Randomized Trial of a Lifestyle Program in Obese Infertile Women. The New England journal of medicine. 2016;374(20):1942-53.
46. Weiss NS, Nahuis MJ, Bordewijk E, Oosterhuis JE, Smeenk JM, Hoek A, et al. Gonadotrophins versus clomifene citrate with or without intrauterine insemination in women with normogonadotropic anovulation and clomifene failure (M-OVIN): a randomised, two-by-two factorial trial. Lancet. 2018;391(10122):758-65.
47. Beelen P, van den Brink MJ, Herman MC, Geomini P, Dekker JH, Duijnhoven RG, et al. Levonorgestrel-releasing intrauterine system versus endometrial ablation for heavy menstrual bleeding. Am J Obstet Gynecol. 2021;224(2):187.e1-.e10.
48. Oderkerk TJ, Beelen P, Geomini P, Herman MC, Leemans JC, Duijnhoven RG, et al. Endometrial ablation plus levonorgestrel releasing intrauterine system versus endometrial ablation alone in women with heavy menstrual bleeding: study protocol of a multicentre randomised controlled trial; MIRA2 trial. BMC Womens Health. 2022;22(1):257.
49. Lemmers M, Verschoor MA, Oude Rengerink K, Naaktgeboren C, Opmeer BC, Bossuyt PM, et al. MisoREST: surgical versus expectant management in women with an incomplete evacuation of the uterus after misoprostol treatment for miscarriage: a randomized controlled trial. Hum Reprod. 2016;31(11):2421-7.
50. Grooten IJ, Koot MH, van der Post JA, Bais JM, Ris-Stalpers C, Naaktgeboren C, et al. Early enteral tube feeding in optimizing treatment of hyperemesis gravidarum: the Maternal and Offspring outcomes after Treatment of HyperEmesis by Refeeding (MOTHER) randomized controlled trial. Am J Clin Nutr. 2017;106(3):812-20.
51. Oudshoorn SC, van Tilborg TC, Eijkemans MJC, Oosterhuis GJE, Friederich J, van Hooff MHA, et al. Individualized versus standard FSH dosing in women starting IVF/ICSI: an RCT. Part 2: The predicted hyper responder. Hum Reprod. 2017;32(12):2506-14.
52. van Tilborg TC, Torrance HL, Oudshoorn SC, Eijkemans MJC, Koks CAM, Verhoeve HR, et al. Individualized versus standard FSH dosing in women starting IVF/ICSI: an RCT. Part 1: The predicted poor responder. Hum Reprod. 2017;32(12):2496-505.
53. van der Vaart LR, Vollebregt A, Milani AL, Lagro-Janssen AL, Duijnhoven RG, Roovers JWR, van der Vaart CH. Effect of Pessary vs Surgery on Patient-Reported Improvement in Patients With Symptomatic Pelvic Organ Prolapse: A Randomized Clinical Trial. Jama. 2022;328(23):2312-23.
54. van Hanegem N, Breijer MC, Slockers SA, Zafarmand MH, Geomini P, Catshoek R, et al. Diagnostic workup for postmenopausal bleeding: a randomised controlled trial. Bjog. 2017;124(2):231-40.
55. Labrie J, Berghmans BL, Fischer K, Milani AL, van der Wijk I, Smalbraak DJ, et al. Surgery versus physiotherapy for stress urinary incontinence. The New England journal of medicine. 2013;369(12):1124-33.
56. van der Ham DP, van der Heyden JL, Opmeer BC, Mulder AL, Moonen RM, van Beek JH, et al. Management of late-preterm premature rupture of membranes: the PPROMEXIL-2 trial. Am J Obstet Gynecol. 2012;207(4):276.e1-10.
57. van der Ham DP, Vijgen SM, Nijhuis JG, van Beek JJ, Opmeer BC, Mulder AL, et al. Induction of labor versus expectant management in women with preterm prelabor rupture of membranes between 34 and 37 weeks: a randomized controlled trial. PLoS Med. 2012;9(4):e1001208.
58. van Kempen LEM, van Teeffelen AS, de Ruigh AA, Oepkes D, Haak MC, van Leeuwen E, et al. Amnioinfusion Compared With No Intervention in Women With Second-Trimester Rupture of Membranes: A Randomized Controlled Trial. Obstet Gynecol. 2019;133(1):129-36.
59. Jozwiak M, Oude Rengerink K, Benthem M, van Beek E, Dijksterhuis MG, de Graaf IM, et al. Foley catheter versus vaginal prostaglandin E2 gel for induction of labour at term (PROBAAT trial): an open-label, randomised controlled trial. Lancet. 2011;378(9809):2095-103.
60. Ten Eikelder ML, Oude Rengerink K, Jozwiak M, de Leeuw JW, de Graaf IM, van Pampus MG, et al. Induction of labour at term with oral misoprostol versus a Foley catheter (PROBAAT-II): a multicentre randomised controlled non-inferiority trial. Lancet. 2016;387(10028):1619-28.
61. van der Meulen JF, Bongers MY, Coppus S, Bosmans JE, Maessen JMC, Oude Rengerink K, et al. The (cost) effectiveness of procedural sedation and analgesia versus general anaesthesia for hysteroscopic myomectomy, a multicentre randomised controlled trial: PROSECCO trial, a study protocol. BMC Womens Health. 2019;19(1):46.
62. Liem S, Schuit E, Hegeman M, Bais J, de Boer K, Bloemenkamp K, et al. Cervical pessaries for prevention of preterm birth in women with a multiple pregnancy (ProTWIN): a multicentre, open-label randomised controlled trial. Lancet. 2013;382(9901):1341-9.
63. van Zijl MD, Koullali B, Naaktgeboren CA, Schuit E, Bekedam DJ, Moll E, et al. Pessary or Progesterone to Prevent Preterm delivery in women with short cervical length: the Quadruple P randomised controlled trial. BMC Pregnancy Childbirth. 2017;17(1):284.
64. Freeman LM, Bloemenkamp KW, Franssen MT, Papatsonis DN, Hajenius PJ, Hollmann MW, et al. Patient controlled analgesia with remifentanil versus epidural analgesia in labour: randomised multicentre equivalence trial. BMJ (Clinical research ed). 2015;350:h846.
65. Coolen AWM, van Oudheusden AMJ, Mol BWJ, van Eijndhoven HWF, Roovers JWR, Bongers MY. Laparoscopic sacrocolpopexy compared with open abdominal sacrocolpopexy for vault prolapse repair: a randomised controlled trial. Int Urogynecol J. 2017;28(10):1469-79.
66. Enklaar RA, Schulten SFM, van Eijndhoven HWF, Weemhoff M, van Leijsen SAL, van der Weide MC, et al. Manchester Procedure vs Sacrospinous Hysteropexy for Treatment of Uterine Descent: A Randomized Clinical Trial. Jama. 2023;330(7):626-35.
67. Detollenaere RJ, den Boon J, Stekelenburg J, IntHout J, Vierhout ME, Kluivers KB, van Eijndhoven HW. Sacrospinous hysteropexy versus vaginal hysterectomy with suspension of the uterosacral ligaments in women with uterine prolapse stage 2 or higher: multicentre randomised non-inferiority trial. BMJ (Clinical research ed). 2015;351:h3717.
68. van Hoogenhuijze NE, Mol F, Laven JSE, Groenewoud ER, Traas MAF, Janssen CAH, et al. Endometrial scratching in women with one failed IVF/ICSI cycle-outcomes of a randomised controlled trial (SCRaTCH). Hum Reprod. 2021;36(1):87-98.
69. Bui BN, Torrance HL, Janssen C, Cohlen B, de Bruin JP, den Hartog JE, et al. Does endometrial scratching increase the rate of spontaneous conception in couples with unexplained infertility and a good prognosis (Hunault > 30%)? Study protocol of the SCRaTCH-OFO trial: a randomized controlled trial. BMC Pregnancy Childbirth. 2018;18(1):511.
70. Kieslinger DC, Vergouw CG, Ramos L, Arends B, Curfs M, Slappendel E, et al. Clinical outcomes of uninterrupted embryo culture with or without time-lapse-based embryo selection versus interrupted standard culture (SelecTIMO): a three-armed, multicentre, double-blind, randomised controlled trial. Lancet. 2023;401(10386):1438-46.
71. van de Laar R, Kruitwagen RF, Zusterzeel PL, Van Gorp T, Massuger LF. Correspondence: Premature Stop of the SOCceR Trial, a Multicenter Randomized Controlled Trial on Secondary Cytoreductive Surgery: Netherlands Trial Register Number: NTR3337. Int J Gynecol Cancer. 2017;27(1):2.
72. van Barneveld E, Veth VB, Sampat JM, Schreurs AMF, van Wely M, Bosmans JE, et al. SOMA-trial: surgery or medication for women with an endometrioma? Study protocol for a randomised controlled trial and cohort study. Hum Reprod Open. 2020;2020(1):hoz046.
73. Westerhuis M, Visser GHA, Moons KGM, van Beek E, Benders MJ, Bijvoet SM, et al. Cardiotocography plus ST analysis of fetal electrocardiogram compared with cardiotocography only for intrapartum monitoring: a randomized controlled trial. Obstet Gynecol. 2010;115(6):1173-80.
74. Balkenende EME, Dahhan T, Beerendonk CCM, Fleischer K, Stoop D, Bos AME, et al. Fertility preservation for women with breast cancer: a multicentre randomized controlled trial on various ovarian stimulation protocols. Hum Reprod. 2022;37(8):1786-94.
75. Molenaar NM, Brouwer ME, Burger H, Kamperman AM, Bergink V, Hoogendijk WJG, et al. Preventive Cognitive Therapy With Antidepressant Discontinuation During Pregnancy: Results From a Randomized Controlled Trial. J Clin Psychiatry. 2020;81(4).
76. de Wit L, Rademaker D, Voormolen DN, Akerboom BMC, Kiewiet-Kemper RM, Soeters MR, et al. SUGAR-DIP trial: oral medication strategy versus insulin for diabetes in pregnancy, study protocol for a multicentre, open-label, non-inferiority, randomised controlled trial. BMJ open. 2019;9(8):e029808.
77. Danhof NA, van Wely M, Repping S, Koks C, Verhoeve HR, de Bruin JP, et al. Follicle stimulating hormone versus clomiphene citrate in intrauterine insemination for unexplained subfertility: a randomized controlled trial. Hum Reprod. 2018;33(10):1866-74.
78. van Dijk MM, Vissenberg R, Fliers E, van der Post JAM, van der Hoorn MP, de Weerd S, et al. Levothyroxine in euthyroid thyroid peroxidase antibody positive women with recurrent pregnancy loss (T4LIFE trial): a multicentre, randomised, double-blind, placebo-controlled, phase 3 trial. Lancet Diabetes Endocrinol. 2022;10(5):322-9.
79. Mourits MJ, Bijen CB, Arts HJ, ter Brugge HG, van der Sijde R, Paulsen L, et al. Safety of laparoscopy versus laparotomy in early-stage endometrial cancer: a randomised trial. The Lancet Oncology. 2010;11(8):763-71.
80. Cornelisse S, Ramos L, Arends B, Brink-van der Vlugt JJ, de Bruin JP, Curfs MH, et al. Comparing the cumulative live birth rate of cleavage-stage versus blastocyst-stage embryo transfers between IVF cycles: a study protocol for a multicentre randomised controlled superiority trial (the ToF trial). BMJ open. 2021;11(1):e042395.
81. Duvekot JJ, Duijnhoven RG, van Horen E, Bax CJ, Bloemenkamp KW, Brussé IA, et al. Temporizing management vs immediate delivery in early-onset severe preeclampsia between 28 and 34 weeks of gestation (TOTEM study): An open-label randomized controlled trial. Acta Obstet Gynecol Scand. 2021;100(1):109-18.
82. van Os MA, van der Ven AJ, Kleinrouweler CE, Schuit E, Kazemier BM, Verhoeven CJ, et al. Preventing Preterm Birth with Progesterone in Women with a Short Cervical Length from a Low-Risk Population: A Multicenter Double-Blind Placebo-Controlled Randomized Trial. Am J Perinatol. 2015;32(10):993-1000.
83. Rikken JFW, Kowalik CR, Emanuel MH, Bongers MY, Spinder T, Jansen FW, et al. Septum resection versus expectant management in women with a septate uterus: an international multicentre open-label randomized controlled trial. Hum Reprod. 2021;36(5):1260-7.
84. van de Laar RLO, Hofhuis W, Duijnhoven RG, Polinder S, Melchers WJG, van Kemenade FJ, et al. Adjuvant VACcination against HPV in surgical treatment of Cervical Intra-epithelial Neoplasia (VACCIN study) a study protocol for a randomised controlled trial. BMC Cancer. 2020;20(1):539.
85. van Leijsen SA, Kluivers KB, Mol BW, Broekhuis SR, Milani FL, van der Vaart CH, et al. Protocol for the value of urodynamics prior to stress incontinence surgery (VUSIS) study: a multicenter randomized controlled trial to assess the cost effectiveness of urodynamics in women with symptoms of stress urinary incontinence in whom surgical treatment is considered. BMC Womens Health. 2009;9:22.
86. van Leijsen SAL, Kluivers KB, Mol BWJ, Hout J, Milani AL, Roovers JWR, et al. Value of urodynamics before stress urinary incontinence surgery: a randomized controlled trial. Obstet Gynecol. 2013;121(5):999-1008.
87. Kroese JA, van der Velde M, Morssink LP, Zafarmand MH, Geomini P, van Kesteren P, et al. Word catheter and marsupialisation in women with a cyst or abscess of the Bartholin gland (WoMan-trial): a randomised clinical trial. Bjog. 2017;124(2):243-9.
88. Prick BW, Jansen AJ, Steegers EA, Hop WC, Essink-Bot ML, Uyl-de Groot CA, et al. Transfusion policy after severe postpartum haemorrhage: a randomised non-inferiority trial. Bjog. 2014;121(8):1005-14.
89. van Leijsen SA, Kluivers KB, Mol BW, Broekhuis SR, Milani AL, Bongers MY, et al. Can preoperative urodynamic investigation be omitted in women with stress urinary incontinence? A non-inferiority randomized controlled trial. Neurourol Urodyn. 2012;31(7):1118-23.
90. Prescott RJ, Counsell CE, Gillespie WJ, Grant AM, Russell IT, Kiauka S, et al. Factors that limit the quality, number and progress of randomised controlled trials. Health technology assessment (Winchester, England). 1999;3(20):1-143.
91. Ioannidis JP, Haidich AB, Pappa M, Pantazis N, Kokori SI, Tektonidou MG, et al. Comparison of evidence of treatment effects in randomized and nonrandomized studies. Jama. 2001;286(7):821-30.
92. Pocock SJ, Elbourne DR. Randomized trials or observational tribulations? N Engl J Med. 2000;342(25):1907-9.