Shahnaz Sultan,^1,∗ Joseph K. Lim,^2,∗ Osama Altayar,³ Perica Davitkov,⁴ Joseph D. Feuerstein,⁵Shazia M. Siddique,⁶ Yngve Falck-Ytter,⁴ Hashem B. El-Serag,⁷ and AGA, on behalf of the 

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This document represents the official recommendations of the American Gastroenterological Association (AGA) and was developed by the AGA Clinical Guideline Committee and Clinical Practice Update Committee and approved by the AGA Governing Board. Development of this guideline was fully funded by the AGA Institute with no additional outside funding.