supported by the Mega-Projects of national science research for the 12th Five-Year Plan(2012ZX10001-006);China-Gates Foundation(2012);Liaoning Educational Department project(LZ2014038);NIH(NIAID 1R01AI114310,FIC 1D43TW009532).
Background:Recent upsurge of new HIV infections among men who have sex with men(MSM)is a major concern in China.Paucity of national-level information regarding the burden and predictors of this progressive epidemic of...