TY  - RPRT
TI  - Emergency contraception.
AU  - P F Van Look
AU  - H von Hertzen
PY  - 1993
DO  - 10.1093/oxfordjournals.bmb.a072594
UR  - https://pubmed.ncbi.nlm.nih.gov/8324605/
ID  - 8324605
ER  -