American Journal of Obstetrics and Gynecology (2015) - Comment
pubmed: 25557210  doi: 10.1016/j.ajog.2014.12.041  issn: 1097-6868  issn: 0002-9378 

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Kathleen M. Antony, Jun Ma, Kristen B. Mitchell, Diana A. Racusin, James Versalovic, Kjersti Aagaard