@misc{indiciaeeb97d51ddfd7, title = {Obstetric anesthesia: changes and choices.}, author = {William F McCool and Jana Packman and Arthur Zwerling}, doi = {10.1016/j.jmwh.2004.08.028}, url = {https://pubmed.ncbi.nlm.nih.gov/15544979/}, note = {Source identifier: 15544979} }