[1] Roche Diagnost Corp, Indianapolis, IN USA
[2] SW Washington Med Ctr, Vancouver, WA USA
[3] Klinikum Nord Zentrallabor, Hamburg, Germany
[4] Univ Alberta Hosp, Edmonton, AB T6G 2B7, Canada
[5] Univ Santiago de Compostela, Fac Med, Santiago De Compostela, Spain
[6] Univ Kliniken Basel, Kantonsspital, Basel, Switzerland
[7] Roche Diagnst GmbH, Mannheim, Germany