Fig. 1
From: An update on vitamin B12-related gene polymorphisms and B12 status
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12263-018-0591-9/MediaObjects/12263_2018_591_Fig1_HTML.gif)
Flow diagram of studies identified in the literature search for the identification of genetic variants associated with vitamin B12 concentrations
From: An update on vitamin B12-related gene polymorphisms and B12 status
Flow diagram of studies identified in the literature search for the identification of genetic variants associated with vitamin B12 concentrations