TY  - RPRT
TI  - Postpartum contraception. Unnecessary before three weeks.
AU  - J Guillebaud
PY  - 1993
DO  - 10.1136/bmj.307.6918.1560-a
UR  - https://pubmed.ncbi.nlm.nih.gov/8274933/
ID  - 8274933
ER  -