Vitamin B12 deficiency

Published by:British Society for Haematology

Last published:2014

Published by:European Society for Clinical Nutrition and Metabolism

Last published:2022

Published by:European Society for Clinical Nutrition and Metabolism

Last published:2020

Published by:Guidelines and Protocols Advisory Committee, British Columbia

Last published:2023

Published by:Office of Dietary Supplements, National Institutes of Health

Last published:2022

Published by:US Department of Health and Human Services; US Department of Agriculture

Last published:2020

Published by:American Association of Clinical Endocrinologists; Obesity Society; American Society for Metabolic & Bariatric Surgery

Last published:2019

Published by:Australian Government National Health and Medical Research Council and New Zealand Ministry for Health

Last published:2017