M. Fayos, J. M. Olmos-Martínez, R. Mazorra, J. D. García-Palacios, and J. M. Olmos, “Subcutaneous sarcoidosis in a patient with chronic hepatitis C virus infection”, Rev Esp Casos Clin Med Intern, vol. 3, no. 3, pp. 110–112, Dec. 2018.