6Seage GR 3rd, Mayer KH, Wold C, et al. The social context of drinking, drug use, and unsafe sex in the Boston Young Men Study. J Acquir Immune Defic Syndr Hum Retrovirol, 1998, 17 (4): 368-375.
7Van Beneden CA, O'Brien K, Modesitt S, et al. Sexual behaviors in an urban bathhouse 15 years into the HIV epidemic. J Acquir Immune Defic Syndr, 2002, 30(5): 522-526.
8Rodes A, Wang J, Blanch G, et al. Transverse study on sex behavior associated with HIV transmission among homosexual men in Catalonia Gac Sanit, 1997, 11(1 ): 16-23.
9Catania JA, Osmond D, Stall RD, et al. The continuing HIV epidemic among men who have sex with men. Am J Public Health, 2001, 91(6): 907-914.
10Dubois-Arber F, Masur JB, Hausser D, et al. Evaluation of AIDS prevention among homosexual and bisexual men in Switzerland. Soc Sci Med,1993, 37( 12): 1539-1544.