Mañá, J.; Marcoval, J.; Rubio, M.; Labori, M.; Fanlo, M.; Pujol, R. Granulomatous Cutaneous Sarcoidosis: Diagnosis, Relationship to Systemic Disease, Prognosis and Treatment. Sarcoidosis Vasc Diffuse Lung Dis 2013, 30 (4), 268-281.