1. Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Abbott Northwestern HospitalMinneapolis Minnesota
2. Division of CardiologyHennepin County Medical CenterMinneapolis Minnesota
3. Department of Medical EducationAbbott Northwestern HospitalMinneapolis Minnesota
4. Department of Cardiovascular DiseasesMayo ClinicRochester Minnesota
5. Division of CardiologyMassachusetts General Hospital, Harvard Medical SchoolBoston Massachusetts
6. Department of MedicineMassachusetts General Hospital, Harvard Medical SchoolBoston Massachusetts