[1] Univ Peruana Cayetano Heredia, Lima, Peru
[2] Johns Hopkins Univ, Baltimore, MD 21218 USA
[3] Univ Calif Los Angeles, David Geffen Sch Med, Los Angeles, CA USA
[4] Med Coll Wisconsin, Milwaukee, WI 53226 USA
[5] St Petersburg State Univ, Biomed Ctr, St Petersburg, Russia
[6] NIMH, Bethesda, MD 20892 USA
[7] Univ Zimbabwe, Sch Med, Harare, Zimbabwe
[8] Fujian Ctr Dis Control & Prevent, Fujian, Peoples R China
[9] Yale Univ, New Haven, CT 06520 USA
[10] Univ Calif San Francisco, San Francisco Dept Publ Hlth, San Francisco, CA 94143 USA
[11] Miriam Hosp, Providence, RI 02906 USA
[12] Univ N Carolina, Chapel Hill, NC USA
[13] SAHAI Trust, Madras, Tamil Nadu, India
[14] CDC, Atlanta, GA 30333 USA
[15] Natl Ctr STD & Leprosy Control, Nanjing, Peoples R China
[16] Univ Arizona, Tucson, AZ 85721 USA