1. Division of General Internal Medicine, University of Colorado, Aurora, Colorado, USA
2. Institute for Health Research, Kaiser Permanente Colorado, Aurora, Colorado, USA
3. Colorado Permanente Medical Group, Denver, Colorado, USA
4. Section of General Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
5. School of Public Health, Yale University, New Haven, Connecticut, USA
6. Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado, Aurora, Colorado, USA
7. Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
8. Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA