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Obstet Gynecol. 1997 Apr;89(4):594-9. doi: 10.1016/s0029-7844(97)00045-8.
Time to pregnancy and preterm delivery.
Henriksen TB, Baird DD, Olsen J, Hedegaard M, Secher NJ, Wilcox AJ
Research Library
The largest, free collection of academic references related to restorative reproductive medicine— made possible by donations.
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