1. Department of General Medicine, Beth Israel Deaconess Medical Center , Boston, Massachusetts , USA
2. Collaborative Caring , Toluca Lake, California , USA
3. Independent researcher, unaffiliated , Greenwood, Indiana , USA
4. Departments of Neurology, Neurologic Surgery and Medicine, University of Washington School of Medicine , Seattle, Washington , USA
5. Department of Family Medicine, University of Vermont , Burlington, Vermont , USA
6. Adult & Child Center for Outcomes Research and Delivery Science (ACCORDS) and Department of Family Medicine, University of Colorado School of Medicine , Aurora, Colorado , USA