6Pangman VC, Seguire M. Sexuality and the chronically ill older adult:A social justice issue[J]. Sexuality and Disability, 2000, 18 (1) :49 - 59.
7Beckman N, Waern M, Gustafson D, et a l. Secular trends in self reported sexual activity and satisfaction in Swedish 70 year olds: Cross sectional survey of four populations 1971 - 2001[J].BMJ, 2008,337:151 - 163.
8Blanker MH, Bosch R, Groeneveld F, et al. Erectile and ejaculatory dysfunction in a community - based sample of men 50 to 78 years old:Prevalence,concern, and relation to sexual activity[J]. Urology,2001,57:763 - 768.
9Edson D, Moreira Jr, Dale B, et al. Sexual activity, sexual dysfunction and associated help - seeking behaviours in middle - aged and older adults in Spain:A population survey[J]. World J Urol,2005, 23:422 - 429.
10Addis IB, Stephen K, Wassel - Fyr CL, et al. Sexual activity and funetion in middle - aged and older women [J]. Obstet Gynecol, 2006,107(4) :755 - 764.
