Endemic hepatitis b and c virus infection in a brazilian eastern amazon region - El Khouri, Marcelo; Cordeiro, Quirino; Luz, Diogo Arantes Behling Pereira da; Duarte, Leandro Savoy; Gama, Mônica Elinor Alves; Corbett, Carlos Eduardo Pereira (Arquivos de Gastroenterologia, 2010)