Endometriosis. American College of Obstetricians and Gynecologists. http://www.acog.org/~/media/For%20Patients/faq013.pdf?dmc=1&ts=20121220T1633490895. 2012. Accessed January 2016.
Lobo R. 2012. Endometriosis. Comprehensive Gynecology Expert Consult, Online and Print, 6th ed; Ch. 19, 433-452. Philadelphia: Elsevier Mosby.