[1] Hosp La Paz, IdiPAZ, Madrid, Spain
[2] Hop St Antoine, F-75571 Paris, France
[3] MRC, Clin Trials Unit, London, England
[4] St Marys Hosp, London, England
[5] Hop La Pitie Salpetriere, Paris, France
[6] Kaplan Med Ctr, AIDS Ctr, Rehovot, Israel
[7] Univ Liverpool, Liverpool L69 3BX, Merseyside, England
[8] Janssen, EMEA, Issy Les Moulineaux, France