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1Academic Journal
المؤلفون: Farmer, Zachary J., Palmaccio-Lawton, Samantha J., Flint, Hilary A., Whitford, Brittney, Thienprayoon, Rachel, Nee, Krista
المصدر: Journal of Perinatology ; volume 43, issue 7, page 889-894 ; ISSN 0743-8346 1476-5543
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2Academic Journal
المصدر: Clinical Obstetrics & Gynecology ; volume 62, issue 2, page 373-387 ; ISSN 0009-9201