<prompt> Risk factor intervention trials for coronary hea diseases are all, EXCEPT:Stanford -Three Community StudyNoh Kerelia ProjectLipid Research Clinics StudySingle Risk Factor Intervention Trial SR-FIT  <response>: Multiple Risk Factor Intervention Trial MRFIT in the US is an example of this. Onslow dietsmoking intervention study is another famous trial. Ref: Parks textbook of Preventive and Social Medicine, 21st edition, page-343 