[1] Walter Reed Army Inst Res, US Mil HIV Res Program, Silver Spring, MD USA
[2] Henry M Jackson Fdn Adv Mil Med, Bethesda, MD USA
[3] Robert Koch Inst, Dept Infect Dis Epidemiol, Unit HIV AIDS STI & Blood Borne Infect, Berlin, Germany
[4] Tech Univ Munich, Univ Hosp Rechts Isar, Munich, Germany
[5] Univ Duisburg Essen, Univ Hosp, Essen, Germany
[6] Univ Clin Koln, Cologne, Germany
[7] Univ Bonn, Dept Internal Med, Bonn, Germany
[8] MVZ Labor Krone GbR, Bad Salzuflen, Germany
[9] Inst Interdisziplinare Med, Hamburg, Germany
[10] Zentrum Infektiol, Berlin, Germany
[11] Infektiologikum, Frankfurt, Germany
[12] Praxis Hohenstaufenring, Cologne, Germany
[13] Praxis Dr Cordes, Berlin, Germany
[14] Univ Bochum, Ctr Sexual Hlth & Med, Bochum, Germany
[15] Praxis Jessen2 Kollegen, Berlin, Germany
[16] Univ Bonn, Inst HIV Res, Bonn, Germany
[17] Univ Bonn, Fac Med, Inst Virol, Bonn, Germany