1. Yale University Prevention Research Center, Griffin Hospital, Derby, CT, USA
2. Stroke Institute Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, MA, USA
3. Harvard Extension School, Boston, MA, USA
4. Staff Neurosurgeon, The Emory Clinic Chief of Neurosurgery, Grady Memorial Hospital, Atlanta, GA, USA
5. Department of Health Promotion and Chronic Disease Prevention, National Institute for Health and Welfare (THL), Helsinki, Finland
6. Departments of Public Health and Surgery, University of Arizona, Tucson, AZ, USA