“Tannenbaum” Teflon stents versus traditional polyethylene stents for treatment of malignant biliary stricture. - Catalano,M.F.; Geenen,J.E.; Lehman,G.A.; Siegel,J.H.; Jacob,L.; Mc Kinley,M.J.; Raijman,I.; Meier,P.; Jacobson,I.; Kozarek,R.; Al-Kawas,F.H.; Lo,S.K.; et al. (Gastrointest Endosc, 2002)