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Youssef A Andraos et al
A B
C D
Figs 5A to D: (A) French tube calibration, (B) bipolar anterior gastric wall marks, (C) bipolar posterior gastric
marks and (D) invagination of the greater curvature
A B
C D
Figs 6A to D: (A) First point: starts 1 cm from the gastroesophageal junction, (B) final view of the first point,
(C) the last point: starts 3 cm before the pylorus and (D) final view of the last point
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