1. Division of Cardiology, Department of MedicineDuke University Medical CenterDurham North Carolina
2. Department of Health ServicesUniversity of WashingtonSeattle Washington
3. Cardiology Department, Heart Research Follow‐Up ProgramUniversity of Rochester New York
4. Department of Clinical PhysiologyKarolinska Institute, and Karolinska University HospitalStockholm Sweden
5. Department of CardiologyVU University Medical CenterAmsterdam The Netherlands
6. Division of Cardiology, Department of MedicineUniversity of Pittsburgh Medical CenterPittsburgh Pennsylvania
7. Division of Applied Regulatory Science, Office of Clinical Pharmacology, Office of Translational Science, Center for Drug Evaluation and ResearchUS Food and Drug AdministrationSilver Spring Maryland