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.