Comparison of patterns of smoking behavior change among smokers in the Multiple Risk Factor Intervention Trial (MRFIT).
D000328:Adult; D001519:Behavior; D002986:Clinical Trials as Topic; D006331:Heart Diseases / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012306:Risk; D012907:Smoking; D013861:Thiocyanates / Q000097:blood
D013861:Thiocyanates