Human chorionic gonadotropin ratio of hemoperitoneum versus venous serum improves early diagnosis of ectopic pregnancy
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The first two authors contributed equally to this work.
Y.D.W. has nothing to disclose. H.Z. has nothing to disclose. Y.C.T. has nothing to disclose. L.H.L. has nothing to disclose. J.Q.T. has nothing to disclose.
This study was supported by the Foundation of the Sixth People's Hospital, Shanghai Jiaotong University, China, grant no. 0875 (to Y.D.W.).
PII: S0015-0282(08)04206-4
doi:10.1016/j.fertnstert.2008.10.013
© 2010 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.

