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Title
Seasonal variation in household, occupational, and leisure time physical activity: longitudinal analyses from the seasonal variation of blood cholesterol study.
Authors
Matthews CE; Freedson PS; Hebert JR; Stanek EJ 3rd; Merriam PA; Rosal MC; Ebbeling CB; Ockene IS
Publication
American journal of epidemiology, 2001, Vol 153, Issue 2, p172