Seasonal variation in household, occupational, and leisure time physical activity: longitudinal analyses from the seasonal variation of blood cholesterol study
American Journal of Epidemiology, Volume 153, Issue 2, 2001, pages 172-183.
Matthews, C.E., Freedson, P.S., Hébert, J.R., Stanek III, E.J., Merriam, P.A., Rosal, M.C., . . . Ockene, I.S. (2001). Seasonal Variation in Household, Occupational, and Leisure Time Physical Activity: Longitudinal Analyses from the Seasonal Variation of Blood Cholesterol Study. American Journal of Epidemiology, 153(2), 172-183. doi: 10.1093/aje/153.2.172
© 2001 by The Johns Hopkins University School of Hygiene and Public Health.