[1] Hop Bichat Claude Bernard, Virol Lab, APHP, F-75018 Paris, France
[2] Univ Bordeaux 2, INSERM, U897, ISPED, F-33076 Bordeaux, France
[3] Catholic Univ Louvain, AIDS Reference Lab, B-1348 Louvain, Belgium
[4] MRC Labs, Banjul, Gambia
[5] Inst Virol, Bonn, Germany
[6] Hosp Carlos III, Dept Infect Dis, Madrid, Spain
[7] CHLO Hosp Egas Moniz, Mol Biol Lab, Lisbon, Portugal
[8] Swedish Inst Infect Dis Control, Dept Virol, Solna, Sweden
[9] Karolinska Inst, Dept Microbiol Tumor & Cell Biol, Stockholm, Sweden
[10] Swiss HIV Cohort Study, Zurich, Switzerland
[11] UCL Royal Free & Univ Coll Med Sch, Ctr Virol, London WC1E 6BT, England
[12] Hop Bichat Claude Bernard, Serv Malad Infect & Trop, APHP, F-75877 Paris 18, France