Chaves Dalton M, de Moura Eduardo G H, Mestieri Luiz H M, Artifon Everson L, Sakai Paulo
Gastrointestinal Endoscopy Unit, University of São Paulo Medical School, São Paulo, Brazil.
Gastrointest Endosc. 2014 Jul;80(1):164. doi: 10.1016/j.gie.2014.03.045. Epub 2014 May 15.