Fig. 3. Endoscopic view of a mucosal double puncture. White arrow indicates the puncture point at the superior duodenal angle (SDA) fold with guide-wire penetration. The duodenal mucosa of the second portion is visible under the SDA fold.

Gastrointestinal Intervention 2017;6:114~117 https://doi.org/10.18528/gii160012

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