Sources | Medically Reviewed on 08/20/2019 Reviewed by Nazia Q Bandukwala, DO on August 20, 2019


(1)    Cultura/Zero Creatives
(2)    Frederic Cirou / PhotoAlto
(3)    Jupiterimages / Comstock Images
(4)    Colorblind / The Image Bank
(5)    Fuse
(6)    A. Chederros
(7)    DAJ
(8)    Shuji Kobayashi / Taxi
(9)    Peter Cade / Iconica
(10)    Peter Scholey / Photographer’s Choice
(11)    Digital Vision


American Academy of Family Physicians.
American Psychological Association.
Araujo, A. American Journal of Epidemiology, 2000.
Bozman, A. Archives of Sexual Behavior, February 1991.
Brown University.
Chew, K. The Journal of Sexual Medicine, May 2009.
Cleveland Clinic.
Coretti, G. Psychiatric Times, August 2007.
Corona, G. The Journal of Sexual Medicine, October 2008.
Hedon, F. International Journal of Impotence Research, 2003.
Johns Hopkins.
McKinley Health Center, University of Illinois at Urbana-Champaign.
National Institute of Diabetes and Digestive and Kidney Diseases.
News release, ScienceDaily.
Pagani, M. Current Medical Research and Opinion, 2000.
Smeltzer, S. Textbook of Medical-Surgical Nursing, Lippincott Williams & Wilkins, 2009.
Stief, C. European Urology Supplements, November 2007.
The Hormone Foundation.
Thompson, I. Journal of the American Medical Association, Dec. 21, 2005.
University of Iowa.

Reviewed by Nazia Q Bandukwala, DO on August 20, 2019

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