title: Portal-systemic shunts in patients with cirrhosis. The need of controlled clinical trials.
mesh_terms: D001201:Ascites / Q000601:surgery; D006801:Humans; D006975:Hypertension, Portal / Q000517:prevention & control / Q000601:surgery; D008103:Liver Cirrhosis / Q000601:surgery*; D011167:Portacaval Shunt, Surgical / Q000401:mortality