A description of the methods of the Nulliparous Pregnancy Outcomes Study: monitoring mothers-to-be (nuMoM2b)
American journal of obstetrics and gynecology, 2015-04, Vol.212 (4), p.539.e1 [Peer Reviewed Journal]Copyright © 2015 Elsevier Inc. All rights reserved. ;EISSN: 1097-6868 ;DOI: 10.1016/j.ajog.2015.01.019 ;PMID: 25648779
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