We believe that openness of data is essential to science. SESH has conducted several online surveys of men who have sex with men in China over the past few years. We have made the de-personalised data available on this page for use. The data shared here has been reviewed by the Guangdong Dermatological and Venereal Disease Control Centre and the University of North Carolina Ethics Review Board. If you wish to use this data, please mail to sesh@seshglobal.org.