TY  - RPRT
TI  - Measuring contraceptive effectiveness: a conceptual framework.
AU  - M Steiner
AU  - R Dominik
AU  - J Trussell
AU  - I Hertz-Picciott
PY  - 1996
DO  - 10.1016/0029-7844(96)00251-7
UR  - https://pubmed.ncbi.nlm.nih.gov/8752225/
ID  - 8752225
ER  -