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我们于I964年7-9月对本省某县医院门诊各科就诊病人无选择地予以胸部透就诊病人绝大部分是农民,其余为职工、干部。在调查期间初、复诊透视只做一次
From July to September, I964, we found that the vast majority of patients going through the thoracic seepage in the outpatient departments of a county hospital in our province were peasants and the rest were workers and cadres. At the beginning of the investigation, referral fluoroscopy only once