title: Quality control of screening procedures in the Multiple Risk Factor Intervention Trial.
mesh_terms: D000328:Adult; D001795:Blood Pressure Determination / Q000592:standards; D002986:Clinical Trials as Topic / Q000592:standards*; D003327:Coronary Disease / Q000097:blood / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000379:methods / Q000592:standards*; D008875:Middle Aged; D011786:Quality Control; D011897:Random Allocation; D012306:Risk