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doi: 10.1016/j.bbi.2009.11.002
In a randomized placebo-controlled trial, metformin treatment was associated with a mean decrease in vitamin B 12 concentration by 19% and an increase in homocysteine concentration by 5% [52]
Int J Pediatr Otorhinolaryngol
10.1016/s1535-6108(04)00059-5 30 KanayamaG.HudsonJ
