1. Medical treatment of ectopic pregnancy: a committee opinion
Fertility and Sterility 
Volume 100, Issue 3, Pages (September 2013)
DOI: /j.fertnstert
Copyright © 2013 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Single-dose MTX treatment failure based on hCG level. ASRM Practice Committee, Fertility and Sterility 2008, Medical Management of Ectopic Pregnancy.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2013 American Society for Reproductive Medicine Terms and Conditions