[1] Alexion Pharmaceut Inc, Cheshire, CT USA
[2] NHLBI, Bethesda, MD USA
[3] Ist Toscano Tumori, Florence, Italy
[4] Hosp St Louis, Paris, France
[5] INSERM, Paris, France
[6] Leeds Gen Infirm, Leeds, W Yorkshire, England
[7] Johns Hopkins Univ, Sch Med, Baltimore, MD USA