3.4 Data sources and research strategy
The search strategies for this systematic review will be based on the keywords (MeSH Terms) “Obesity. Endoscopy. Bariatric surgery. Gastric Bypass. Stent”, with publications from 2010 to 2020, in order to analyze the most recent scientific publications. The research will be carried out in June 2020 and developed at SCOPUS (Elsevier and non-Elsevier database), PUBMED (MEDLINE biomedical literature, life science magazines, and online books) and SCIENCE DIRECT (Elsevier database), including the National Institutes of Health RePORTER Grant database and clinical trial records. In addition, a combination of the keywords with the Booleans “OR”, AND and the operator “NOT” will be used to target scientific articles of interest. The title and abstracts will be examined under all conditions. The research structure used in the databases is shown in Figure 1.
Figure 1. Example of the research structure in PubMed, the same search strategy was used in the other databases.