1. Dartmouth‐Hitchcock Medical Center Heart and Vascular Center Lebanon New Hampshire USA
2. Geisel School of Medicine at Dartmouth The Dartmouth Institute for Health Policy and Clinical Practice Hanover New Hampshire USA
3. Section of Geriatrics Yale University, School of Medicine New Haven Connecticut USA
4. Department of Medicine Weil Cornell Medicine New York New York USA
5. Department of Economics Dartmouth College Hanover New Hampshire USA