The rate at which serum total β-subunit human chorionic gonadotropin increases after embryo transfer is a predictor of the viability of pregnancy and an identifier of determinants of pregnancy
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PII: S0015-0282(06)03051-2
doi:10.1016/j.fertnstert.2006.04.048
© 2006 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.

