In the primary search 115 records were found. After
exclusion of studies/reviews which did not examine
the effect of micronutrient supplements on pregnancy
outcomes duplicated and outdated (published before
2005) data, 64 articles were selected. During the second
selection we evaluated 17 of them as potentially relevant
articles considering the effect of multiple micro nutrient
supplementations on pregnancy and birth outcomes.
Studies that failed to meet our criteria were not taken
into consideration (Figure 1)