医护英语学习
U
ChronicObstructivePulmonaryDisease(COPD)
Chronicobstructivepulmonarydisease(COPD)isairflowlimitationcausedbyaninflammatoryresponsetoinhaledtoxins,oftencigarettesmoke.Symptomsareproductivecoughanddyspneathatdevelopoveryears;