title: [Demographic profile of men who have sex with men who seek for sex mostly on internet].
authors: The Sex Health Center of the Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China.
authors: Xiu-Fang
authors: XF
authors: Li
authors: Bei-Chuan
authors: BC
authors: Zhang
authors: Quan-Sheng
authors: QS
authors: Chu
mesh_terms: D003710:Demography; D018451:Homosexuality, Male / Q000523:psychology* / Q000706:statistics & numerical data; D006801:Humans; D020407:Internet; D008297:Male; D011795:Surveys and Questionnaires