[1] Univ Illinois, Dept Kinesiol & Community Hlth, Champaign, IL 61820 USA
[2] Univ Minnesota, Sch Publ Hlth, Div Epidemiol & Community Hlth, Minneapolis, MN 55455 USA
[3] Louisiana State Univ LSU, Sch Nutr & Food Sci, Baton Rouge, LA 70803 USA
[4] LSU Agr Ctr, Baton Rouge, LA 70803 USA
[5] Univ Illinois, Univ Lib, Champaign, IL 61820 USA
[6] Univ Tennessee, Dept Nutr, Knoxville, TN 37996 USA