1. Research and Training Center on Independent Living, Life Span Institute, University of Kansas, 1000 Sunnyside Ave., Room 1052, Lawrence, KS 66045, USA
2. Institute for Health and Disability Policy Studies (KU-IHDPS), Life Span Institute, University of Kansas, 1000 Sunnyside Ave., Room 1052, Lawrence, KS 66045, USA
3. Department of Special Education, School of Education, University of Kansas, 1122 W. Campus Rd., Lawrence, KS 66045, USA
4. Division of Physical Activity and Weight Management (DPAWM), Department of Internal Medicine, University of Kansas Medical Center, 3901 Rainbow Boulevard Mailstop 1007, Kansas City, KS 66160, USA
5. Department of Kinesiology, College of Health and Human Sciences, Kansas State University, Manhattan, KS 66506, USA
6. Department of Research and Evaluation, The Phoenix, Denver, CO 64035, USA