TY  - RPRT
TI  - Obstetric anesthesia: changes and choices.
AU  - William F McCool
AU  - Jana Packman
AU  - Arthur Zwerling
DO  - 10.1016/j.jmwh.2004.08.028
UR  - https://pubmed.ncbi.nlm.nih.gov/15544979/
ID  - 15544979
ER  -