沙丁胺醇气雾剂联合异丙托溴铵气雾剂治疗慢性阻塞性肺疾病的临床疗效
사정알순기무제연합이병탁추안기무제치료만성조새성폐질병적림상료효
The effect of aerosol salbutamol combined with aerosol isopropyl bromide in the treatment of chronic obstructive pulmo-nary disease
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