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An individual becomes deficient when they are not consuming enough vitamin B12-rich foods or they are unable to absorb sufficient vitamin b12

Psfai B, Cserp C, Hegeds P, et al

Alcohol-induced liver injury in mice lacking Cu, Zn-superoxide dismutase

A sub-population of approximately 6% produce Abs against muscle-specific tyrosine kinase (MuSK)

If the distribution of confounding factors differs in the two arms, explicative regression analysis will be performed in which the dependent variable will be the normalisation of the serum vitamin B12 concentration, and the independent variable will be the treatment group