[1] Xi An Jiao Tong Univ, Hlth Sci Ctr, China Australia Joint Res Ctr Infect Dis, Sch Publ Hlth, Xian, Peoples R China
[2] Melbourne Sexual Hlth Ctr, Alfred Hlth, Melbourne, Australia
[3] Monash Univ, Fac Med Nursing & Hlth Sci, Cent Clin Sch, Melbourne, Australia
[4] Xi An Jiao Tong Univ, China Australia Joint Res Ctr Infect Dis, Hlth Sci Ctr, Sch Publ Hlth, 76 Yanta West Rd, Xian 710061, Peoples R China