[1] Quest Clin Res, San Francisco, CA 94115 USA
[2] Maxwell Ctr, Durban, South Africa
[3] Cent Texas Clin Res, Austin, TX USA
[4] Hosp Nacl Cayetano Heredia, Dept Trop Infect Dis & Dermatol, Lima, Peru
[5] Mexico Ctr Clin Res, Mexico City, DF, Mexico
[6] Hosp Univ Munich, Sect Clin Infect Dis Med 4, Munich, Germany
[7] AIDS Res Consortium Atlanta, Atlanta, GA USA
[8] Dr J Fourie Med Ctr, Dundee, Scotland
[9] Asistencia Cient Alta Complejidad SAS, Bogota, Colombia
[10] Hosp Nacl Edgardo Rebagliati Martins, Lima, Peru
[11] Inst Oulton, Cordoba, Argentina
[12] Univ Med & Pharm, Craiova, Romania
[13] Bristol Myers Squibb Co, Res & Dev, Wallingford, CT 06492 USA
[14] Bristol Myers Squibb Co, Res & Dev, Princeton, NJ USA