Human intestinal spirochetosis as a cause of chronic diarrhea in an HIV-positive patient: A case report A.J. Chaar; J.S. Arbelaez; M.J. Vargas; R.A. Cañadas;

Cutaneous metastases as a manifestation of esophageal adenocarcinoma recurrence: A case report A.C. Hani; E. Nuñez; I. Cuellar; M. Mejía; F. Ávila;