Ortho Evra Package Insert. Accessed January 20, 2010 from http://www.orthoevra.com.
ACOG Practice Bulletin: Noncontraceptive uses of Hormonal Contraception. Number 110, January 2010.
Burkman R. Transdermal hormonal contraception: benefits and risks. Am J Obstet Gynecol 2007;197:134.e1-134.e6.