1. Hennepin County Medical Center, University of Minnesota School of Medicine, Minneapolis, MN
2. University of Maryland School of Medicine, Baltimore, MD
3. Mayo Clinic and Mayo College of Medicine, Rochester, MN
4. Department of Internal Medicine, Clinical Division of Cardiology, Innsbruck Medical University, Austria
5. Department of Biochemistry, Hospital de la Santa Creu i Sant Pau and Universitat Autonoma, Barcelona, Spain
6. Laboratorio Analisi Chimico Cliniche, Dipartimento di Medicina di Laboratorio, Azienda Ospedaliera ‘Spedali Civili’, Brescia, Italy
7. Chemical Pathology Department Pathology, Queensland, Royal Brisbane and Women’s Hospital, Brisbane, Australia
8. University of California at San Francisco, San Francisco General Hospital, San Francisco, CA