Fig. 4. Photograph shows a self-expandable metallic stent (SEMS) (constructed in-house) used for coaxial SEMS placement technique: outer bare stent (top), inner retrievable covered stent (middle), and assembled coaxial stent (bottom).

Gastrointestinal Intervention 2016;5:91~97 https://doi.org/10.18528/gii150032

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