International guidelines

United Kingdom

Published by:British Society for Haematology

Last published:2017

Published by:British Society for Haematology

Last published:2017

Published by:British Society for Haematology

Last published:2016

Published by:British Society for Haematology

Last published:2015

Published by:National Institute for Health and Care Excellence

Last published:2015

Published by:British Society of Gastroenterology

Last published:2011

North America

Published by:AABB (formerly known as American Association of Blood Banks)

Last published:2016

Rest of the world

Published by:World Health Organization

Last published:2020

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