Reproduced with permission from: Pediatric and Adolescent Gynecology, 6
th ed, Emans SJ, Laufer MR (Eds), Lippincott Williams & Wilkins, Philadelphia 2012. Copyright © 2012 Lippincott Williams & Wilkins.
www.lww.com. This image was republished in Emans, Laufer, Goldstein's Pediatric and Adolescent Gynecology, 7th Ed (2019).