National Center for Biotechnology Information NCBI NLM MEDLINE review humans pubmed abstract nih national institutes of health national library of medicine pregnancy research support non-u.s. gov't female adolescent Child Infant newborn pmid:23746776 doi:10.1016/s0140-6736(13)60996-4 zulfiqar a bhutta jai k das lancet nutrition interventions review group the maternal and child nutrition study group birth intervals / statistics & numerical data breast feeding calcium / administration & dosage child nutritional physiological phenomena / physiology* preschool constriction dietary supplements evidence-based medicine folic acid / administration & dosage growth disorders / epidemiology iodine / administration & dosage iron / administration & dosage malnutrition / mortality malnutrition / prevention & control* micronutrients / administration & dosage nutritional status nutritional support perinatal care preconception care / methods pregnancy complications / prevention & control* pregnancy outcome prenatal nutritional physiological phenomena / physiology randomized controlled trials as topic risk factors umbilical cord vitamins / administration & dosage