Chebli Julio Maria Fonseca, Gaburri Pedro Duarte, Morais José Maria Mendes
Division of Gastroenterology, Department of Medicine, Santa Casa de Misericórdia Hospital, Juiz de Fora, Brazil.
Lancet. 2005;366(9487):748. doi: 10.1016/S0140-6736(05)67180-2.