1. Gastroenterology and Hepatology Department Hospital Universitário Prof Edgard Santos Salvador Brazil
2. Medical School of the Federal University of Bahia‐Brasil Salvador Brazil
3. IDOR São Paulo Brazil
4. Department of Pathology School of Medicine of the Federal University of Bahia Salvador Brazil
5. LPEM of the Instituto de Pesquisa Gonçalo Moniz‐FIOCRUZ Salvador Brazil
6. Faculty of Medicine Medical School of the Federal University of Bahia Salvador Brazil
7. Hospital Provincial del Centenario University of Rosario School of Medicine Rosario Argentina