?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Goldring&rft.aufirst=ST&rft.au=Goldring%2C+ST&rft.pages=+-+&rft.issue=6&rft.atitle=Prenatal+Vitamin+D+supplementation+and+child+respiratory+health%3A+a+randomised+controlled+trial&rft.title=PLoS+One&rft.volume=8&rft.issn=1932-6203&rft.date=24+June+2013&rft.genre=article