Maternal vitamin B12 in pregnancy and risk of preterm birth and low birth weight: A systematic review and individual participant data meta-analysis

gan Rogne, Tormod, Tielemans, Myrte J, Chong, Mary Foong-Fong, Yajnik, Chittaranjan S, Krishnaveni, Ghattu V, Poston, Lucilla, Jaddoe, Vincent W V, Steegers, Eric A P, Joshi, Suyog, Chong, Yap-Seng, Godfrey, Keith M, Yap, Fabian, Yahyaoui, Raquel, Thomas, Tinku, Hay, Gry, Hogeveen, Marije, Demir, Ahmet, Saravanan, Ponnusamy, Skovlund, Eva, Martinussen, Marit P, Jacobsen, Geir W, Franco, Oscar H, Bracken, Michael B, Risnes, Kari R
Cyhoeddwyd yn Am J Epidemiol (2017)