Correlation between fetal heart rate, crown-rump length, and β-human chorionic gonadotropin levels during the first trimester of well-timed conceptions resulting from infertility treatment
- 1 June 1993
- journal article
- Published by Elsevier in Fertility and Sterility
- Vol. 59 (6) , 1169-1173
- https://doi.org/10.1016/s0015-0282(16)55971-8
Abstract
No abstract availableKeywords
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