. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: J Pediatr Adolesc Gynecol. 2012 Dec 31;26(2):86–95. doi: 10.1016/j.jpag.2012.10.006
© 2012 North American Society for Pediatric and Adolescent Gynecology. Published by Elsevier Inc. All rights reserved.