TY  - RPRT
TI  - Contraception with NORPLANT implants.
AU  - I Sivin
PY  - 1994
DO  - 10.1093/oxfordjournals.humrep.a138341
UR  - https://pubmed.ncbi.nlm.nih.gov/7844209/
ID  - 7844209
ER  -