1. Associations
    1. American College of Obstetricians and Gynecologists (ACOG)
    2. American Board of Obstetrics and Gynecology (ABOG)
    3. The American Society for Reproductive Medicine
    4. American Urogynecologic Society (AUGS)
    5. Association of Professors of Gynecology and Obstetrics (APGO)
    6. National Institutes of Health (NIH)
    7. The Society for Gynecologic Investigation (SGI)
    8. The Society of Gynecologic Oncology (SGO)
    9. Society for Maternal-Fetal Medicine (SMFM)
  2. Reference Shelf
    1. Medscape
    2. National Library of Medicine