. Author manuscript; available in PMC: 2013 Jul 10.
Published in final edited form as: J Obstet Gynecol Neonatal Nurs. 2012 Jun 14;41(4):506–518. doi: 10.1111/j.1552-6909.2012.01384.x
© 2012 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses