Fig. 5.
Photograph shows (A) a SEMS with antireflux sleeves (Niti-S Double Anti-reflux; Taewoong Medical, Gimpo, Korea); (B) a SEMS with antireflux valves (Hanarostent; M.I. Tech, Pyeongtaek, Korea).
SEMS = self-expanding metallic stents.
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