Gestational vitamin D supplementation leads to reduced perinatal RXRA DNA methylation: results from the MAVIDOS trial by Curtis, EM, Krstic, N, Cook, E, D'Angelo, S, Crozier, SR, Moon, RJ, Murray, R, Garratt, E, Costello, P, Cleal, J, Ashley, B, Bishop, NJ, Kennedy, S, Papageorghiou, AT, Schoenmakers, I, Fraser, R, Gandhi, SV, Prentice, A, Javaid, MK, Inskip, HM, Godfrey, KM, Bell, CG, Lillycrop, KA, Cooper, C, Harvey, NC, Mavidos Trial Group