1. Department of Cardiovascular MedicineMayo Clinic PhoenixArizonaUSA
2. Department of Internal MedicineNew York Medical College at Saint Michael's Medical Center NewarkNew JerseyUSA
3. Department of Internal MedicineMcLaren Flint Hospital FlintMichiganUSA
4. Department of Internal MedicineAmita Health Saint Francis Hospital EvanstonIllinoisUSA
5. Demoulas Center for Cardiac ArrhythmiasMassachusetts General Hospital and Harvard Medical School BostonMassachusettsUSA