1. Department of Computer Science; University of Vermont College of Medicine; Burlington VT USA
2. University of Vermont College of Medicine; Burlington VT USA
3. Department of Neurological Sciences; University of Vermont College of Medicine; Burlington VT USA
4. Department of Medical Biostatistics; University of Vermont College of Medicine; Burlington VT USA
5. Department of Orthopaedics & Rehabilitation; University of Vermont College of Medicine; Burlington VT USA
6. Division of Preventive Medicine; Brigham and Women's Hospital; Harvard Medical School; Boston MA USA