Pigmented purpuric dermatosis in two patients with common variable immunodeficiency. Swiss Medical Weekly, [S. l.], v. 156, n. 1, p. 3993, 2026. DOI: 10.57187/3993. Disponível em: https://smw.ch/index.php/smw/article/view/3993. Acesso em: 4 feb. 2026.