1. Feldman, H.A., et al., Impotence and its medical and psychosocial correlates: results of the Massachusetts Male Aging Study. J Urol, 1994. 151(1): p. 54-61.

2. Parazzini, F., et al., Frequency and determinants of erectile dysfunction in Italy. Eur Urol, 2000. 37(1): p. 43-9.

3. Fedele, D., et al., Erectile dysfunction in diabetic subjects in Italy. Gruppo Italiano Studio Deficit Erettile nei Diabetici. Diabetes Care, 1998. 21(11): p. 1973-7.

4. Fedele, D., et al., Erectile dysfunction in type 1 and type 2 diabetics in Italy. On behalf of Gruppo Italiano Studio Deficit Erettile nei Diabetici. Int J Epidemiol, 2000. 29(3): p. 524-31.

5. McCulloch, D.K., et al., The natural history of impotence in diabetic men. Diabetologia, 1984. 26(6): p. 437-40.

6. Seftel, A.D., et al., Advanced glycation end products in human penis: elevation in diabetic tissue, site of deposition, and possible effect through iNOS or eNOS. Urology, 1997. 50(6): p. 1016-26.

7. Angulo, J., et al., Diabetes impairs endothelium-dependent relaxation of human penile vascular tissues mediated by NO and EDHF. Biochem Biophys Res Commun, 2003. 312(4): p. 1202-8.

8. Cartledge, J.J., I. Eardley, and J.F. Morrison, Advanced glycation end-products are responsible for the impairment of corpus cavernosal smooth muscle relaxation seen in diabetes. BJU Int, 2001. 87(4): p. 402-7.

9. Saenz de Tejada, I., et al., Impaired neurogenic and endothelium-mediated relaxation of penile smooth muscle from diabetic men with impotence. N Engl J Med, 1989. 320(16): p. 1025-30.

10. Goldstein, I., et al., Vardenafil, a new phosphodiesterase type 5 inhibitor, in the treatment of erectile dysfunction in men with diabetes: a multicenter double-blind placebo-controlled fixed-dose study. Diabetes Care, 2003. 26(3): p. 777-83.

11. Saenz de Tejada, I., et al., Effects of tadalafil on erectile dysfunction in men with diabetes. Diabetes Care, 2002. 25(12): p. 2159-64.

12. Behrend, L., J. Vibe-Petersen, and H. Perrild, Sildenafil in the treatment of erectile dysfunction in men with diabetes: demand, efficacy and patient satisfaction. Int J Impot Res, 2005. 17(3): p. 264-9.

13. Heaton, J.P., et al., Intracavernosal alprostadil is effective for the treatment of erectile dysfunction in diabetic men. Int J Impot Res, 2001. 13(6): p. 317-21.

14. Perimenis, P., et al., Long-term treatment with intracavernosal injections in diabetic men with erectile dysfunction. Asian J Androl, 2006. 8(2): p. 219-24.

15. Ryder, R.E., et al., Impotence in diabetes: aetiology, implications for treatment and preferred vacuum device. Diabet Med, 1992. 9(10): p. 893-8.

16. Akoz, T., et al., The use of iliac bone flap as a penile stiffener in a diabetic patient with erectile dysfunction. Plast Reconstr Surg, 1999. 103(7): p. 1975-8.

17. Mulcahy, J.J., et al., The penile implant for erectile dysfunction. J Sex Med, 2004. 1(1): p. 98-109.

18. Levine, L.A., C.R. Estrada, and A. Morgentaler, Mechanical reliability and safety of, and patient satisfaction with the Ambicor inflatable penile prosthesis: results of a 2 center study. J Urol, 2001. 166(3): p. 932-7.

19. Montorsi, F., et al., AMS three-piece inflatable implants for erectile dysfunction: a long-term multi-institutional study in 200 consecutive patients. Eur Urol, 2000. 37(1): p. 50-5.

20. Bishop, J.R., et al., Use of glycosylated hemoglobin to identify diabetics at high risk for penile periprosthetic infections. J Urol, 1992. 147(2): p. 386-8.

21. Wilson, S.K., et al., Quantifying risk of penile prosthesis infection with elevated glycosylated hemoglobin. J Urol, 1998. 159(5): p. 1537-9; discussion 1539-40.

22. Cakan, M., et al., Risk factors for penile prosthetic infection. Int Urol Nephrol, 2003. 35(2): p. 209-13.

23. Gerig, N.E., R.B. Meacham, and D.A. Ohl, Use of electroejaculation in the treatment of ejaculatory failure secondary to diabetes mellitus. Urology, 1997. 49(2): p. 239-42.

24. Kamischke, A. and E. Nieschlag, Update on medical treatment of ejaculatory disorders. Int J Androl, 2002. 25(6): p. 333-44.

25. Tomasi, P.A., G. Fanciulli, and G. Delitala, Successful treatment of retrograde ejaculation with the alpha1-adrenergic agonist methoxamine: case study. Int J Impot Res, 2005. 17(3): p. 297-9.

26. Koch, P.B. and E.W. Young, Diabetes and female sexuality: a review of the literature. Health Care Women Int, 1988. 9(4): p. 251-62.

27. Yang, C.C., et al., Sexually responsive vascular tissue of the vulva. BJU Int, 2006. 97(4): p. 766-72.

28. Caruso, S., et al., Sildenafil improves sexual functioning in premenopausal women with type 1 diabetes who are affected by sexual arousal disorder: a double-blind, crossover, placebo-controlled pilot study. Fertil Steril, 2006.