3[1]Smact HL.CliCical featuces,pathophysiology and yelevance ofportal hypertensive pastropathy.Endoecopy,1991,23:224.
4[2]Viggiano TR,Gostout CJ.Portal hypertensive intestinal vasculopathy:A review of the clinical,endoscopic,and histopathologic features.Am J of Gastroenterology,1992,87:944.