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This bypasses the digestive system allowing for full absorption of the vitamin
Minks E, Marecek R, Pavlik T, Ovesna P, Bares M
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Diagnosing and Testing for Vitamin B12 Deficiency in the UK In the UK, diagnosis of vitamin B12 deficiency follows guidance from the British Society for Haematology (BSH) and NICE , emphasising a combination of clinical assessment and laboratory investigation
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