International guidelines
United Kingdom
Published by:National Institute for Health and Care Excellence
Last published:2023
North America
Published by:Society of American Gastrointestinal and Endoscopic Surgeons
Last published:2024
Published by:American College of Radiology
Last published:2022
Published by:The American College of Obstetricians and Gynecologists
Last published:2017 (re-affirmed 2021)
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