[1] Univ Erlangen Nurnberg, D-91054 Erlangen, Germany
[2] Swedish Med Ctr, Seattle, WA USA
[3] Univ Washington, Sch Med, Seattle, WA USA
[4] Univ Calif San Diego, San Diego, CA 92103 USA
[5] Univ Sheffield, Sheffield, S Yorkshire, England
[6] Hosp Clin Univ, Santiago, Spain
[7] Schon Klin Hamburg Eilbek, Hamburg, Germany
[8] Univ Genoa, Genoa, Italy
[9] Univ Orleans, Orleans, France
[10] Southampton Univ Hosp, Southampton, Hants, England
[11] Univ Massachusetts, Sch Med, Worcester, MA USA