Maternal B-vitamin and vitamin D status before, during, and after pregnancy and the influence of supplementation preconception and during pregnancy: Prespecified secondary analysis of the NiPPeR double-blind randomized controlled trial. - Godfrey, Keith M.; Titcombe, Philip; El-Heis, Sarah; Albert, Benjamin B.; Tham, Elizabeth Huiwen; Barton, Sheila J.; Kenealy, Timothy; Chong, Mary Foong-Fong; Nield, Heidi; Chong, Yap Seng; Chan, Shiao-Yng; Cutfield, Wayne S. (PLoS Medicine, 2023)