Efficacy of vitamin D supplementation in gestational diabetes mellitus: Systematic review and meta-analysis of randomized trials. - Rodrigues MRK; Lima SAM; Mazeto GMFDS; Calderon IMP; Magalhães CG; Ferraz GAR; Molina AC; Costa RAA; Nogueira VDSN; Rudge MVC (PloS one, 2019)