International guidelines

United Kingdom

Published by:National Institute for Health and Care Excellence

Last published:2019 (updated 2023)

Published by:British Thyroid Association

Last published:2006

North America

Published by:American College of Radiology

Last published:2022

Published by:American College of Obstetricians and Gynecologists

Last published:2020 (reaffirmed 2023)

Published by:British Columbia Ministry of Health

Last published:2018

Published by:American Thyroid Association

Last published:2017

Published by:American Thyroid Association

Last published:2016

Rest of the world

Published by:American Association of Clinical Endocrinologists, American College of Endocrinology, and Associazione Medici Endocrinologi

Last published:2016

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