Oral versus intramuscular administration of vitamin B12 for vitamin B12 deficiency in primary care: a pragmatic, randomised, non-inferiority clinical trial (OB12).
BMJ Open. 2020 Aug 20;10(8):e033687. doi: 10.1136/bmjopen-2019-033687.
BMJ Open. 2020.
PMID: 32819927
Free PMC article.
Clinical Trial.