1. Long-term risk of ectopic pregnancy varies by method of tubal sterilization: a whole- population study 
Eva Malacova, Ph.D., Anna Kemp, Ph.D., Roger Hart, M.D., C.R.E.I., Khadra Jama-Alol, M.P.H., David Brian Preen, Ph.D. 
Fertility and Sterility 
Volume 101, Issue 3, Pages (March 2014)
DOI: /j.fertnstert
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Kaplan-Meier survival curve showing the cumulative probability of ectopic pregnancy (EP) in women who underwent tubal sterilization. (A) Overall. (B) According to age group (18–27 years, green square; 28–33 years, blue circle; 34–44 years, red diamond).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions