Comparison between endoscopic sclerotherapy and band ligation for hemostasis of acute variceal bleeding - Luz, Gustavo Oliveira; Maluf-Filho, Fauze; Matuguma, Sérgio Eiji; Hondo, Fábio Yuji; Ide, Edson; Melo, Jeane Martins; Cheng, Spencer; Sakai, Paulo (World J Gastrointest Endosc, 2011)