1 Division of Gastroenterology and Hepatology, Toronto Centre for Liver Disease, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada.
2 Instituto Alfa de Gastroenterologia, Hospital das Clínicas da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
3 Division of Gastroenterology and Hepatology, Hospital da Polícia Militar de Minas Gerais, Belo Horizonte, Brazil.