To the Editor

Affiliations

• ¹ Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts; Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil.
• ² Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil.
• ³ Endovitta Institute, SP-Brazil and Florida International University, Miami, Florida.
• ⁴ Division of Gastroenterology, Hepatology and Endoscopy - Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.