TY  - RPRT
TI  - Effectiveness and risks of contraception.
AU  - W Droegemueller
AU  - R Bressler
PY  - 1980
DO  - 10.1146/annurev.me.31.020180.001553
UR  - https://pubmed.ncbi.nlm.nih.gov/6994615/
ID  - 6994615
ER  -