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选择24名飞行员作为受试者,其中16人为吸烟者,每天吸1～2包香烟;8人为非吸烟者。有一半受试者患有冠状动脉疾病或高血压,并正在接受治疗。禁食
Twenty-four pilots were chosen as subjects, of whom 16 were smokers, taking 1 to 2 packs of cigarettes a day and 8 were non-smokers. Half of the subjects had coronary artery disease or hypertension and were undergoing treatment. fasting