Methods
The published results from high-quality human observational
and experimental studies which analyzed the effects
of supplying Multiple Micro Nutrients (MMN) on the
course of pregnancy and pregnancy outcomes were all
included to this literature based analysis. Electronic search
of Medline, Pub Med, Health Internetwork Access to Research
Initiative (HINARI), and Google Scholar databases
up to the end of 2011 was conducted. Search was done in
keywords: (“Mothers” OR “Pregnancy” OR mother* OR
maternal OR pregnancy) AND (“Micronutrients” OR
“multiple micronutrient*” OR multivitamin OR micronutrient*)
AND (supplement*) AND (Observational OR
studies OR clinical trials). A function extracting related
articles as well as reference lists from research, reviews
and editorials was used during the search process. The full
version of the English-language analyzed articles and
abstracts of most found papers were available during the
selection process except for pubmed search.