Those confounding variables!
C R
CR
Buncher
J A
JA
Morrison
D000328:Adult; D002318:Cardiovascular Diseases / Q000453:epidemiology*; D002648:Child; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D010290:Parents; D010809:Physical Fitness; D012307:Risk Factors; D014028:Tobacco Smoke Pollution / Q000009:adverse effects*
D014028:Tobacco Smoke Pollution