International guidelines

United Kingdom

Published by:National Institute for Health and Care Excellence

Last published:2018

Europe

Published by:National Working Group of Medical Societies

Last published:2016

Published by:National Working Group of Medical Societies

Last published:2016

North America

Published by:American Academy of Otolaryngology-Head and Neck Surgery

Last published:2019

Published by:Infectious Diseases Society of America; American Society for Microbiology

Last published:2018

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