5Hou MC, Chen WC, Lin HC, et al. A new "sandwich" method of combined endoscopic variceal ligation and sclerotherapy versus ligation alone in the teatment of esophageal variceal bleeding a random ized trial, Gastrointest Endosc, 2001, 53( 6): 572-578.
6Lo GH,Lai KH,Cheng JS,et al.The additive effect of sclerotherapy to patients receiving repeated endoscopic variceal ligation:a prospective,randomized trial[J].Hepatology,1998,28(2):391-395.
7Madonia S,d'Amico G,Traina M,et al.Prognostic indicators of successful endoscopic sclerotherapy for prevention of rebleeding from oesophageal varices in cirrhosis:a long-term cohort study[J].Dig Liver Dis,2000,32(9):782-791.
8Baroncini D,Milandri GL,Borioni D,et al.A prospective randomized trial of sclerotherapy versus ligation in the elective treatment of bleeding esophageal varices[J].Endoscopy,1997,29(4):235-240.
9Hou MC,Chen WC,Lin HC,et al.A new "sandwich" method of combined endoscopic variceal ligation and sclerotherapy versus ligation alone in the treatment of esophageal variceal bleeding:a randomized trial[J].Gastrointest Endosc,2001,53(6):572-578.
10Bhasin DK,Malhi NJ.Variceal bleeding and portal hypertension:much to learn,much to explore[J].Endoscopy,2002,34(2):119-128.