“…Other regional and sentinel surveys reveal high HIV prevalence rates among MSM in many large metropolitan areas: 5.2% in Beijing in 2006 [11], 7-8% in Chongqing [12,13], and 10.6% in Chengdu [14], while rising HIV prevalence rates among MSM were also reported in Nanjing [15], Shenyang [16], Shenzhen [17,18], Jinan [19], and Jiangsu Province [20]. The increased number of reported cases among MSM may result from a combination of factors, including a higher disclosure rate that can be attributed to increasing cultural acceptance of homosexuality and the expanding size of sexual networks [4,21] and increased presence of risk behaviors [2,16,[22][23][24][25][26] with persistently high rates of unprotected anal intercourse (UAI) among MSM [10,14,27] in China. It is undeniable that China, like other Asian countries, is facing an expanding HIV epidemic among its 10 to 20 million MSM [6].…”