Heart disease and Iowa's high school athletes.
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D000293:Adolescent; D003430:Cross-Sectional Studies; D016757:Death, Sudden, Cardiac / Q000517:prevention & control; D006330:Heart Defects, Congenital / Q000453:epidemiology* / Q000517:prevention & control; D006801:Humans; D015994:Incidence; D007484:Iowa / Q000453:epidemiology; D008403:Mass Screening; D012307:Risk Factors; D013177:Sports / Q000706:statistics & numerical data*