Fig. 2. Botox injection method (A) An injection needle is used to make injections at (B, C) the squamocolumnar junction, or up to 1 cm proximally. Then, 100 IU in total is injected in four to five equal volume aliquots, to (D) equally space the injections in a circumferential manner, and at the same level.

Gastrointestinal Intervention 2014;3:19~23 https://doi.org/10.1016/j.gii.2014.03.001

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