COPD exacerbator phenotype: time for reassessment?

Affiliations

• ¹ Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, The State University of New York at Buffalo, Buffalo, NY 14215, USA.
• ² Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, The State University of New York at Buffalo, Buffalo, NY 14215, USA. Electronic address: mador@buffalo.edu.