TY  - RPRT
TI  - Future developments in hormonal contraception.
AU  - Elof D B Johansson
PY  - 2004
DO  - 10.1016/j.ajog.2004.01.059
UR  - https://pubmed.ncbi.nlm.nih.gov/15105801/
ID  - 15105801
ER  -