1. Section of General Internal Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA;
2. Geisel School of Medicine at Dartmouth, Hanover, NH, USA;
3. The Dartmouth Institute for Health Policy and Clinical Practice, Lebanon, NH, USA;
4. Dartmouth Centers for Health and Aging, Dartmouth College, Hanover, NH, USA;
5. Health Promotion Research Center at Dartmouth, Lebanon, NH, USA;
6. Center for Technology and Behavioral Health, Dartmouth College, Hanover, NH, USA;
7. Department of Computer Science, Dartmouth College, Hanover NH, USA;
8. Department of Biology, Dartmouth College, Hanover NH, USA;
9. Department of Anthropology, Dartmouth College, Hanover NH, USA