• Maternal 25-hydroxyvitamin d and preterm birth in twin gestations.

      Bodnar, Lisa M; Rouse, Dwight J; Momirova, Valerija; Peaceman, Alan M; Sciscione, Anthony; Spong, Catherine Y; Varner, Michael W; Malone, Fergal D; Iams, Jay D; Mercer, Brian M; et al. (2013-07)
      To assess whether there was an independent association between maternal 25-hydroxyvitamin D concentrations at 24-28 weeks of gestation and preterm birth in a multicenter U.S. cohort of twin pregnancies.