Neg, negative; Border, borderline; +, medium staining; ++, strong
staining; +++ very strong staining. PAH, pulmonary arterial
hypertension; ILD, interstitial lung disease; GIS, gastrointestinal
system; DU, digital ulcer; SRC, scleroderma renal crisis; ANA,
antinuclear antibody; mRSS, modified Rodnan skin score
Figure 1. Distribution of the autoantibody positivities of the
patients.