title: Twenty years of studies on portal hypertension.
mesh_terms: D003097:Collateral Circulation; D005500:Follow-Up Studies; D006801:Humans; D006975:Hypertension, Portal; D008103:Liver Cirrhosis; D008548:Melanosis; D011172:Portography; D012552:Schistosomiasis; D014471:Umbilical Veins