1Irisawa A,Obara K,Sato Y,et al.EUS analysis of collateral veins inside and outside the esophageal wall in portal hypertension[].Gastrointestinal Endoscopy.1999
2Sato T,Yamazaki K,Toyota J,et al.Perforating veins in recurrent esophageal varices after endoscopic therapy visualized by endoscopic color Doppler ultrasonography[].Digestive Endoscopy.1999
3Lopes CV,Coelho NV,Pereira-Lima JC.Recurrence of esophageal varices after eradication by endoscopic band ligation in cirrhotic patients[].Gastrointestinal Endoscopy.2001
4Colon VJ,Ramirez FC.Short and long term outcomes after esophageal variceal ligation(EVL):relation to the number of bands placed per session a prospective randomized study[].Gastrointestinal Endoscopy.1999