1. Predictors of treatment failure for ectopic pregnancy treated with single-dose methotrexate 
Afaf Tawfiq, M.D., Abdul-Fattah Agameya, M.D., Paul Claman, M.D. 
Fertility and Sterility 
Volume 74, Issue 5, Pages (November 2000)
DOI: /S (00)

2. Figure 1 Outcome of EP patients treated with MTX.
Tawfiq. Methotrexate and ectopic pregnancy. Fertil Steril 2000.
Fertility and Sterility  , DOI: ( /S (00) )

3. Figure 2
Adjusted odds ratios for variables that affect risk of MTX treatment failure, using multivariate analysis.
Tawfiq. Methotrexate and ectopic pregnancy. Fertil Steril 2000.
Fertility and Sterility  , DOI: ( /S (00) )