Zhao, M <br/><br/>
[Strengthening the studies on acute exacerbation of chronic obstructive pulmonary disease].  [electronic resource] 

 -  Zhonghua nei ke za zhi  Oct 2001 
 - 649-50 p.  digital 
<br/><br/> Publication Type: Editorial 
<br/><br/><label>ISSN: </label>0578-1426 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans<br/>Pulmonary Disease, Chronic Obstructive--diagnosis