联合应用左旋氧氟沙星和头孢呋辛治疗慢性阻塞性肺疾病急性发作的疗效观察
연합응용좌선양불사성화두포부신치료만성조새성폐질병급성발작적료효관찰
The efficacy observation on levofloxacin combine with cefuroxime for chronic obstructive pulmonary disease exacerbations