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Initial investigations typically include a full blood count (including MCV), serum B12 and folate levels

Some of the benefits are also lost along the way

[PMC free article] [PubMed] [Google Scholar] 4.Graham ID, Jette N, Tetroe J, Robinson N, Milne S, Mitchell SL

2017 doi: 10.1016/j.cmet.2017.10.006