1. Guiteras R: Prostatic hypertrophy, in Guiteras R (Ed): Urology—The Diseases of the Urinary Tract in Men and Women: A Book for Practitioners and Students. New York, D. Appleton, 1912, vol II, p 226
2. Effects of sexual abstinence by men;Salzman;Med Aspects Hum Sex,1976
3. Sexual function in 1,202 aging males;Bortz;J Gerontol A Biol Sci Med Sci,1999
4. Sexual dysfunction in the United States;Laumann;JAMA,1999
5. Sex and the quality of life in Denmark;Ventegodt;Arch Sex Behav,1998