1. Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN (J.C.J.).
2. Section of Cardiovascular Medicine, Department of Medicine, Yale School of Medicine, New Haven, CT (P.E.M.).
3. Divisions of Cardiothoracic Surgery (J.E.T.), University of Utah Health and School of Medicine, Salt Lake City.
4. Emergency Medicine (J.E.T.), University of Utah Health and School of Medicine, Salt Lake City.