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OVID
American Board of Obstetrics and Gynecology
No Pub/Vend Assigned
American Academy of Pain Medicine
American Society of Anesthesiologists
Wiley
American Academy of Family Physicians
College of Family Physicians of Canada
Karger
FierceHealthcare
Dove Press
PubMed Central
National Center for Complementary and Integrative Health
National Institutes of Health (NIH)
Pain Assessment and Management Initiative
NC AHEC
Hindawi Publishing
NC Medical Board
American Journal of Obstetrics and Gynecology
MedlinePlus
Institute for Healthcare Improvement
JAMA Network Open
British Medical Journal
American College of Obstetricians & Gynecologists