title: Controlled trials of the diet-heart hypothesis: some comments on the experimental unit.
mesh_terms: D002791:Cholesterol, Dietary; D003327:Coronary Disease / Q000517:prevention & control*; D006801:Humans; D006949:Hyperlipidemias / Q000188:drug therapy; D007391:International Cooperation; D012107:Research Design / Q000592:standards
chemical_list: D002791:Cholesterol, Dietary