title: World's biggest heart attack study.
mesh_terms: D000328:Adult; D003327:Coronary Disease / Q000517:prevention & control*; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000517:prevention & control*; D014944:World Health Organization