1. Moreira ED Jr, Kim SC, Glasser D, Gingell C. Sexual activity, prevalence of sexual problems, and associated help-seeking patterns in men and women aged 40-80 years in Korea: data from the Global Study of Sexual Attitudes and Behaviors (GSSAB). J Sex Med. 2006. 3:201–211.
2. Kloner RA. Erectile dysfunction as a predictor of cardiovascular disease. Int J Impot Res. 2008. 20:460–465.
3. Greenstein A, Chen J, Miller H, Matzkin H, Villa Y, Braf Z. Does severity of ischemic coronary disease correlate with erectile function? Int J Impot Res. 1997. 9:123–126.
4. Feldman HA, Goldstein I, Hatzichristou DG, Krane RJ, McKinlay JB. Impotence and its medical and psychosocial correlates: results of the Massachusetts Male Aging Study. J Urol. 1994. 151:54–61.
5. Feldman HA, Johannes CB, Derby CA, Kleinman KP, Mohr BA, Araujo AB, et al. Erectile dysfunction and coronary risk factors: prospective results from the Massachusetts male aging study. Prev Med. 2000. 30:328–338.
6. Ledda A. Cigarette smoking, hypertension and erectile dysfunction. Curr Med Res Opin. 2000. 16:Suppl 1. S13–S16.
7. Braun M, Wassmer G, Klotz T, Reifenrath B, Mathers M, Engelmann U. Epidemiology of erectile dysfunction: results of the 'Cologne Male Survey'. Int J Impot Res. 2000. 12:305–311.
8. Ahn TY, Lee DS, Kang W, Hong JH, Kim YS. Validation of an abridged Korean version of the International Index of Erectile Function (IIEF-5) as a diagnostic tool for erectile dysfunction. Korean J Urol. 2001. 42:535–540.
9. American Diabetes Association. Diagnosis and classification of diabetes mellitus. Diabetes Care. 2004. 27:Suppl 1. S5–S10.
10. Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults. Executive summary of the third report of the national cholesterol education program (NCEP) expert panel on detection, evaluation, and treatment of high blood cholesterol in adults (adult treatment panel III). JAMA. 2001. 285:2486–2497.
11. Cho MJ, Kim KH. Diagnostic validity of the CES-D (Korean version) in the assessment of the DSM-III-R major depression. J Korean Neuropsychiatr Assoc. 1993. 32:381–399.
12. Ahn TY, Park JK, Lee SW, Hong JH, Park NC, Kim JJ, et al. Prevalence and risk factors for erectile dysfunction in Korean men: results of an epidemiological study. J Sex Med. 2007. 4:1269–1276.
13. Analysis of Sexual Behaviour in France (ACSF). A comparison between two modes of investigation: telephone survey and face-to-face survey. ASCF principal investigators and their associates. AIDS. 1992. 6:315–323.
14. Kim JA, Montagnani M, Koh KK, Quon MJ. Reciprocal relationships between insulin resistance and endothelial dysfunction: molecular and pathophysiological mechanisms. Circulation. 2006. 113:1888–1904.
15. Kawanishi Y, Lee KS, Kimura K, Koizumi T, Nakatsuji H, Kojima K, et al. Screening of ischemic heart disease with cavernous artery blood flow in erectile dysfunctional patients. Int J Impot Res. 2001. 13:100–103.
16. Roumeguère T, Wespes E, Carpentier Y, Hoffmann P, Schulman CC. Erectile dysfunction is associated with a high prevalence of hyperlipidemia and coronary heart disease risk. Eur Urol. 2003. 44:355–359.
17. Chung WS, Sohn JH, Park YY. Is obesity an underlying factor in erectile dysfunction? Eur Urol. 1999. 36:68–70.
18. Bacon CG, Mittleman MA, Kawachi I, Giovannucci E, Glasser DB, Rimm EB. Sexual function in men older than 50 years of age: results from the health professionals follow-up study. Ann Intern Med. 2003. 139:161–168.
19. Dicpinigaitis PV, Tso R, Banauch G. Prevalence of depressive symptoms among patients with chronic cough. Chest. 2006. 130:1839–1843.
20. De Berardis G, Pellegrini F, Franciosi M, Belfiglio M, Di Nardo B, Greenfield S, et al. Clinical and psychological predictors of incidence of self-reported erectile dysfunction in patients with type 2 diabetes. J Urol. 2007. 177:252–257.