Creation of transjugular intrahepatic portosystemic shunts with stent-grafts: initial experiences with a polytetrafluoroethylene-covered nitinol endoprosthesis - Cejna,M.; Peck-Radosavljevic,M.; Thurnher,S.A.; Hittmair,K.; Schoder,M.; Lammer,J. (Radiology, 2001)