1. Department of Health, Kinesiology, and Recreation, College of Health, University of Utah, Salt Lake City, UT, USA
2. Institute for Child, Youth and Family Policy at the Heller School for Social Policy and Management, Brandeis University, Boston, MA, USA
3. Minnesota Population Center, University of Minnesota, Minneapolis, MN, USA
4. Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, MN, USA