Feng Tie-Jian, Liu Xiao-Li, Cai Yu-Mao, Pan Peng, Hong Fu-Chang, Jiang Wei-Na, Zhou Hua, Chen Xiang-Sheng
Shenzhen Center for Chronic Disease Control and Treatment, Shenzhen, Guangdong Province, People's Republic of China.
Sex Transm Dis. 2008 Dec;35(12):1022-4. doi: 10.1097/OLQ.0b013e31818600f4.