Blair Steven N, Hand Gregory A, Hill James O
Department of Exercise Science, Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, South Carolina, USA.
School of Public Health, West Virginia University.
Br J Sports Med. 2015 Aug;49(15):970-1. doi: 10.1136/bjsports-2015-094592. Epub 2015 Mar 13.