1Ready JB,Robertson AD,Goff JS,et al.Assessment of the risk of bleeding from esophageal varices by continuous monitoring of portal pressure. Gastroenterology,1991,100:1403.
2Corm HO.Complication of portal hypertension,in;Gitnick GL(ed).Current Hepatoligy.Vo12.New York:A Wiley Med Pub,1982.131-158.
