Asthma–COPD overlap 2015: now we are six

@article{Gibson2015AsthmaCOPDO2,
  title={Asthma–COPD overlap 2015: now we are six},
  author={Peter G. Gibson and Vanessa Marie McDonald},
  journal={Thorax},
  year={2015},
  volume={70},
  pages={683 - 691}
}
Background The overlap between asthma and COPD is increasingly recognised. This review examines the new insights, treatment and remaining knowledge gaps for asthma–COPD overlap. Method A systematic literature review of cluster analyses of asthma and COPD was performed. Articles from 2009 to the present dealing with prevalence, morbidity and treatment of asthma–COPD overlap were identified and reviewed. Results Asthma–COPD overlap was consistently recognised in studies using a variety of… 
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