RT Journal Article SR Electronic T1 Online-only: Children in day care not physically active because of many factors, study finds JF The Nation's Health JO Nations Health FD American Public Health Association SP E1 OP E1 VO 42 IS 1 A1 Currie, Donya YR 2012 UL http://www.thenationshealth.org/content/42/1/E1.abstract AB