[1] Goethe Univ Frankfurt, Zentrum Innere Med, D-6000 Frankfurt, Germany
[2] Katholieke Univ Leuven, Rega Inst, Louvain, Belgium
[3] Katholieke Univ Leuven Hosp, AIDS Reference Lab, Louvain, Belgium
[4] UCL Royal Free & Univ Coll Med Sch, Dept Retrovirol, London, England
[5] Hvidovre Univ Hosp, Dept Infect Dis, DK-2650 Hvidovre, Denmark
[6] UCL Royal Free Hosp, London NW3 2QG, England
[7] Glaxo Wellcome Res & Dev Ltd, Stevenage SG1 2NY, Herts, England
[8] Univ Utrecht, Med Ctr, Dept Virol, Utrecht, Netherlands
[9] Hop Bichat Claude Bernard, Dept Virol, F-75877 Paris, France
[10] EATG, Athens, Greece
[11] Univ Padua, Dept Paediat, Padua, Italy
[12] Virco Grp NV, Mechelen, Belgium
[13] EATG, Paris, France
[14] Hop Cantonal Univ Geneva, Virol Lab, Geneva, Switzerland
[15] Univ Birmingham, Sch Med, PHLS, Antiviral Susceptibil Reference Unit, Birmingham, W Midlands, England
[16] Ctr Hosp Luxembourg, Natl Serv Infect Dis, Luxembourg, Luxembourg
[17] Ctr Hosp Luxembourg, Retrovirol Lab, Luxembourg, Luxembourg
[18] Univ Amsterdam, Acad Med Ctr, Dept Virol, Natl AIDS Therapy Evaluat Ctr, NL-1105 AZ Amsterdam, Netherlands
[19] Univ Amsterdam, Acad Med Ctr, Dept Internal Med, NL-1105 AZ Amsterdam, Netherlands
[20] St Laszlo Hosp, Dept Immunol & Trop Med, Budapest, Hungary
[21] Virol Lab, Serv Imunohemoterapia, Lisbon, Portugal
[22] Hosp Badalona Germans Trias & Pujol, Fundacio irsiCaixa, Barcelona, Spain
[23] Hop Univ St Pierre, B-1000 Brussels, Belgium
[24] Inst Trop Med, Dept Clin Sci, B-2000 Antwerp, Belgium
[25] HIV Assoc Flanders, Antwerp, Belgium
[26] Innogenet NV, Ghent, Belgium
[27] Univ Coll Dublin, Dept Med Microbiol, Dublin 2, Ireland
[28] Univ Athens, Sch Med, Dept Hyg & Epidemiol, Natl Retrovirus Reference Ctr, GR-11527 Athens, Greece
[29] Slotervaart Hosp, Dept Pharm & Pharmacol, Amsterdam, Netherlands
[30] Visible Genet Europe SA, Evry, France
[31] Univ San Francisco, San Francisco, CA 94117 USA
[32] Hop La Pitie Salpetriere, Paris, France
[33] Virol Networks BV, Utrecht, Netherlands
[34] St James Hosp, Dept Genitourinary Med, Dublin 8, Ireland
[35] Univ Zurich Hosp, Dept Med, CH-8091 Zurich, Switzerland
[36] UCL Royal Free & Univ Coll Med Sch, Dept Care & Populat Sci, London, England
[37] UCL Royal Free & Univ Coll Med Sch, Royal Free Ctr HIV Med, London, England
[38] Appl Biosyst Inc, Foster City, CA 94404 USA
[39] Huddinge Univ Hosp, Dept Immunol Microbiol Pathol & Infect Dis, S-14186 Huddinge, Sweden
[40] Inst Salud Carlos III, Infect Dis Serv, Madrid, Spain
[41] Glaxo Wellcome Res & Dev Ltd, Greenford, Middx, England
[42] Ist Super Sanita, I-00161 Rome, Italy
[43] GPC Germany, Ipse Commun, Berlin, Germany