1. Human chorionic gonadotropin ratio of hemoperitoneum versus venous serum improves early diagnosis of ectopic pregnancy 
YuDong Wang, M.D., Hong Zhao, Ph.D., YinCheng Teng, M.D., LiHua Lu, B.A., JianQian Tong, B.A. 
Fertility and Sterility 
Volume 93, Issue 3, Pages (February 2010)
DOI: /j.fertnstert
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Scatter diagram of RP/V values per diagnostic category. The distribution of EP values above the suggested cutoff value of 1.0 (sensitivity 1.0, specificity 1.0) is shown.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2 ROC curve of RP/V for discriminating EP from hIUP.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions