TY  - RPRT
TI  - Towards defensive obstetrics.
AU  - I Chalmers
AU  - A Macfarlane
PY  - 1979
DO  - 10.1016/s0140-6736(79)90505-1
UR  - https://pubmed.ncbi.nlm.nih.gov/83507/
ID  - 83507
ER  -