TY - JOUR AU - Rogne, Tormod AU - Tielemans, Myrte J AU - Chong, Mary Foong-Fong AU - Yajnik, Chittaranjan S AU - Krishnaveni, Ghattu V AU - Poston, Lucilla AU - Jaddoe, Vincent W V AU - Steegers, Eric A P AU - Joshi, Suyog AU - Chong, Yap-Seng AU - Godfrey, Keith M AU - Yap, Fabian AU - Yahyaoui, Raquel AU - Thomas, Tinku AU - Hay, Gry AU - Hogeveen, Marije AU - Demir, Ahmet AU - Saravanan, Ponnusamy AU - Skovlund, Eva AU - Martinussen, Marit P AU - Jacobsen, Geir W AU - Franco, Oscar H AU - Bracken, Michael B AU - Risnes, Kari R PY - 2017 DO - 10.1093/aje/kww212 UR - https://hdl.handle.net/10668/25501 T2 - American journal of epidemiology AB - Vitamin B12 (hereafter referred to as B12) deficiency in pregnancy is prevalent and has been associated with both lower birth weight (birth weight LA - en KW - low birth weight KW - pregnancy KW - preterm birth KW - systematic review KW - vitamin B12 KW - Birth Weight KW - Female KW - Humans KW - Infant, Low Birth Weight KW - Infant, Newborn KW - Pregnancy KW - Pregnancy Complications KW - Premature Birth KW - Risk Factors KW - Vitamin B 12 KW - Vitamin B 12 Deficiency TI - Associations of Maternal Vitamin B12 Concentration in Pregnancy With the Risks of Preterm Birth and Low Birth Weight: A Systematic Review and Meta-Analysis of Individual Participant Data. TY - research article VL - 185 ER -