1. Department of Epidemiology, Human Genetics, & Environmental Sciences, School of Public Health in Austin, The University of Texas Health Science Center at Houston, Austin, TX, USA
2. Parks and Recreation Department, Austin, TX, USA
3. Department of Health Promotion & Behavioral Sciences, School of Public Health in Houston, The University of Texas Health Science Center at Houston, Austin, TX, USA
4. Brown School People, Health & Place Unit, Prevention Research Center, Washington University in St. Louis, St Louis, MO, USA
5. Department of Electrical and Systems Engineering, McKelvey School of Engineering, Washington University in St. Louis, St Louis, MO, USA
6. Department of Kinesiology and Health Education, The University of Texas at Austin, Austin, TX, USA