Chaves D M, Costa F F, Matuguma S, Lera Dos Santos M E, de Moura E G, Maluf Filho F, Sakai P
Gastrointestinal Endoscopy Unit, Hospital das Clínicas, São Paulo University Medical School, São Paulo, Brazil.
Endoscopy. 2012;44 Suppl 2 UCTN:E99-100. doi: 10.1055/s-0030-1256740. Epub 2012 Apr 3.