title: A randomized primary preventive trial in coronary heart disease: the Oslo study.
mesh_terms: D000328:Adult; D003327:Coronary Disease / Q000453:epidemiology / Q000517:prevention & control*; D004032:Diet; D006801:Humans; D008297:Male; D008875:Middle Aged; D009664:Norway; D011322:Primary Prevention / Q000379:methods*; D012907:Smoking