[1] Hosp Clin Barcelona, Barcelona, Spain
[2] Univ Ulm, Ulm, Germany
[3] Johns Hopkins Univ, Med Ctr, Baltimore, MD 21218 USA
[4] Radboud Univ Nijmegen Med Ctr, Nijmegen, Netherlands
[5] Washington Univ, Sch Med, St Louis, MO USA
[6] Royal Melbourne Hosp, Parkville, Vic 3050, Australia
[7] Cleveland Clin Fdn, Cleveland, OH 44195 USA
[8] Hop St Louis, Paris, France
[9] Duke Univ, Med Ctr, Durham, NC USA
[10] Osaka Univ, Grad Sch Med, Osaka, Japan
[11] SAS, Alexion Pharmaceut, Paris, France
[12] Leeds Teaching Hosp NHS Trust, Leeds, W Yorkshire, England