主要指一般市、县医院及省辖市的区（如朝阳区）医院，以及相当规模的工矿、企事业单位的职工医院 。
单位：一所区级医院医学影像科。
SETTING: Medical imaging department of a hospital at district level.
应用临床流行病学方法监测县区级医院院内感染的现状。
Clinical epidemiological method was used in the analysis of nosocomial infections in county hospitals.
很多患者迈着沉重的脚步，奔走于诊所和区级医院，寻求结核病药物和抗逆转录疗法药物。
Many shuffle between health clinics for TB medications and district hospitals for antiretroviral drugs.
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