[1] UK HIV Drug Resistance Database, MRC Clin Trials Unit, London WC2B 6NH, England
[2] Gartnavel Royal Hosp, Glasgow, Lanark, Scotland
[3] Chelsea & Westminster Hosp, London, England
[4] Royal Free NHS Trust, London, England
[5] Hlth Protect Agcy, Porton Down, England
[6] S Tees Hosp NHS Trust, Middlesbrough, Cleveland, England
[7] Brighton & Sussex Univ Hosp NHS Trust, Brighton, E Sussex, England
[8] St Bartholomews & London NHS Trust, London, England
[9] HIV I Base, London, England
[10] Hlth Protect Agcy, Ctr Infect, London, England
[11] Univ Liverpool, Liverpool, Merseyside, England
[12] Hlth Protect Scotland, Glasgow, Lanark, Scotland
[13] Leeds Teaching Hosp NHS Trust, Leeds, W Yorkshire, England
[14] UCL, London WC1E 6BT, England
[15] Imperial Coll London, London, England
[16] Wellcome Trust Sanger Inst, Hinxton, England
[17] UCL Med Sch, London, England
[18] Hlth Protect Agcy, London, England
[19] Univ Edinburgh, Edinburgh EH8 9YL, Midlothian, Scotland
[20] Imperial NHS Trust, London, England
[21] St Bartholomews Hosp, London, England
[22] St Georges Healthcare Trust, London, England
[23] UCL, Sch Med, London WC1E 6BT, England
[24] Birmingham Heartlands Hosp, Hlth Protect Agcy, Birmingham, W Midlands, England
[25] Royal Infirm Edinburgh NHS Trust, Edinburgh, Midlothian, Scotland
[26] Manchester Royal Infirm, Manchester, Lancs, England
[27] Guys & St Thomas NHS Fdn Trust, London, England
[28] Mortimer Market Ctr, London, England
[29] Addenbrookes Hosp, Cambridge, England
[30] Kings Coll Hosp London, London, England