Wan Ahmad Syahril Rozli WAN ALI et al. 2015. A Cross Sectional Study of Cardiopulmonary Complications and Severity of Pulmonary Hypertension and Lung Fibrosis in Patients With Systemic Sclerosis. Archives of Rheumatology. 30, 4 (Dec. 2015), 311–318. DOI:https://doi.org/10.5606/ArchRheumatol.2015.5593.