Matos-Costa, João, Sofia C. Jorge, Jorge Barbas, M. Martins Prata, and Nelson Rodrigues. 2009. “Diffuse Systemic Sclerosis With Pulmonary Involvement and Scleroderma Renal Crisis: Report of a Rare Clinical Association”. Internal Medicine 16 (2). Lisboa, Portugal:98-105. https://revista.spmi.pt/index.php/rpmi/article/view/1397.