[1] Hosp Univ Bellvitge, Barcelona, Spain
[2] Mission Res Inc, Manchester, Lancs, England
[3] Univ Saarlandes Kliniken, Homburg, Germany
[4] Lanssjukhuset Ryhov, Jonkoping, Sweden
[5] Amgen Inc, Zug, Switzerland
[6] St Antonius Hosp, Nieuwegein, Netherlands