4Chen C Y, Ballard R C, Beck-sague C M, et al. Human immunodeficiency virus infection and genital ulcer diseasein South Mrica: the herpetic connection[J] . Sex Trasm Dis, 2000, 27 (1) : 30.
5Risbud A, Chan-Tack K, Gadkari D, et al. The etiology of genital ulcer disease by multiplex polymerase chain reaction and relationship to HIV infection among patients attending sexually transmitted disease clinics in Pune,India[J]. Sex Transm Dis, 1999, 26 (1) : 55.
6Famole O, Okesola A O, Famole A O. Genital ulcers disease among sexually transmitted disease clinic attendees in Ibadan, Nigeria[J] . Mr J Med Med Sci, 2000,29 (1): 17.
7Gomez M P, Kimball A M, Orlander H, et al. Epidemic crack cocaine use linked with epidemics of genital ulcer disease and heterosexual HIV infection in the Bahamas:evidence of impact of prevention and control measures [J].Sex Transm Dis, 2002, 29 (5): 259.
8Dickerson M C, Johnston J, Delea T E, et al. The causal role for genital ulcer disease as a risk factor for transmission of human immunodficiency virus. An application of the Bradford Hill criteria[J] . Sex Transm Dis,1996, 23 (5): 429.
