Treatment of digital ulcers in systemtic sclerosis with endothelin-1 receptor antagonist (bosentan). Reumatismo, [S. l.], v. 59, n. 2, p. 135–139, 2007. DOI: 10.4081/reumatismo.2007.135. Disponível em: https://www.reumatismo.org/reuma/article/view/reumatismo.2007.135. Acesso em: 6 jul. 2025.