4Fiorini A,Fleischer D,Valero J,Self-expandable metal coil stents in the treatment of benign esophageal strictures refractory to conventional therapy:a case series.Gastrointest Endosc,2000,52:259-262.
5Song HY,Park SI,Do YS,et al.Expandable metallic stent placement in patients with benign esophageal strictures:results of longterm follow-up.Radiology,1997,203:131-136.
6Repici A,Conio M,De Angelis C.Temporary placement of an expandable polyester silicone-covered stent for treatment of refractory benign esophageal strictures.Gastrointest Endosc,2004,60:513-519.
7Song HY,Jung HY,Park SI.Covered retrievable expandable nitinol stents in patients with benign esophageal strictures:initial experience.Radiology,2000,217:551-557.