DOI:
10.1055/s-00000009
American Journal of Perinatology
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References
Osterman MJK.
BirthStats: Percentage of mothers receiving epidural/spinal anesthesia by age, race, and Hispanic origin of mother: total of 18 U.S. reporting areas, singletons only, 2006.
Birth 2009;
36 (4) 340-341
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