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. Author manuscript; available in PMC: 2017 Aug 1.
Published in final edited form as: Am J Epidemiol. 2017 Feb 1;185(3):212–223. doi: 10.1093/aje/kww212

Figure 1. Flow chart of studies included in at least one of the meta-analyses of the association between B12 and birth weight or length of gestation.

Figure 1

B12, vitamin B12; IPD, individual participant data.

Four studies were not included because IPD or reanalyses were not provided, and results could not be abstracted from the published reports.

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