1. Cutoff value of human chorionic gonadotropin in relation to the number of methotrexate cycles in the successful treatment of ectopic pregnancy 
Ewa Nowak-Markwitz, M.D., Ph.D., Marcin Michalak, M.D., Ph.D., Mikołaj Olejnik, M.D., Ph.D., Marek Spaczynski, M.D., Ph.D. 
Fertility and Sterility 
Volume 92, Issue 4, Pages (October 2009)
DOI: /j.fertnstert
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Receiver operating characteristic (ROC) curves for β-hCG concentrations before and after one methotrexate (MTX) cycle in success group of patients. There is no statistically significant difference between the two curves.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions