Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency

Josep Vidal‐Alaball1, Christopher Butler2, Rebecca Cannings‐John2, Andrew Goringe3, Kerenza Hood2, Andrew McCaddon4, Ian McDowell5, Αλεξάνδρα Παπαϊωάννου6
1National Public Health Service for Wales, 36 Orchard Street, Swansea, Wales, UK, SA1 5AQ.
2Cardiff University; Department of Primary Care and Public Health, School of Medicine; Centre for Health Sciences Research, School of Medicine 3rd Floor, Neuadd Meirionnydd, Heath Park Cardiff UK CF14 4XN
3Cardiff and Vale NHS Trust; Department of Haematology; University Hospital of Wales Heath Park Cardiff Wales UK CF14 4XW
4Cardiff University; Department of General Practice, Wales College of Medicine; Gardden Road Surgery Rhosllanerchugog Wrexham Wales UK LL14 2EN
5Cardiff University; Department of Medical Biochemistry and Immunology; University Hospital of Wales Heath Park Cardiff Wales UK CF14 4XW
6McMaster University; Department of Medicine; Hamilton Health Sciences P.O. Box 2000, Chedoke Wilcox, 2nd Floor Hamilton Ontario Canada L8N 3Z5

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