ERS | monograph Guest Editors Pierre-Régis Burgel Pierre-Régis Burgel is currently Professor of Respiratory Medicine at Paris Descartes University in Paris, France, where he is also a senior researcher in the Cystic Fibrosis and Chronic Airway Diseases Laboratory. He is a senior consultant at the Respiratory Medicine Department of Cochin Hospital in Paris. Pierre-Régis Burgel completed his medical training at the University of Paris, School of Medicine (Paris), in 1999. After a post-doctoral fellowship at the University of California in San Francisco (USA) (1999–2001), he obtained a PhD in respiratory cell biology at the University of Paris. His main research interests include COPD phenotypes, CF in adults, and chronic bacterial infection in COPD and CF. He has published over 150 articles in peer reviewed journals in these areas of lung disease. Pierre-Régis Burgel is a member of several professional societies, including the European Respiratory Society (ERS), the American Thoracic Society (ATS), the European Cystic Fibrosis Society (ECFS), and the Société de Pneumologie de Langue Francaise (SPLF). He is Vice President of the French Cystic Fibrosis Society and a member of the ERS College of Experts. He is also a member of the Editorial Boards of the European Respiratory Journal, COPD: Journal of Chronic Obstructive Pulmonary Disease and Revue des Maladies Respiratoires. He is the scientific secretary of the French collaborative group INITIATIVES BPCO, which is dedicated to the identification of clinically relevant COPD phenotypes. He was recently an active member of the ATS/ERS task force on Research Questions in COPD and the ERS/ECFS task force on the Provision of Care for Adults with CF in Europe. Marco Contoli Marco Contoli is Assistant Professor at the Section of Respiratory Diseases, Dept of Medical Sciences, of the University of Ferrara, Ferrara, Italy. He is also a respiratory consultant at the Respiratory Disease Unit of the Arcispedale Sant’Anna, Azienda Ospedaliero-Universitaria (Ferrara). Copyright ©ERS 2017. Print ISBN: 978-1-84984-089-7. Online ISBN: 978-1-84984-090-3. Print ISSN: 2312-508X. Online ISSN: 2312-5098. https://doi.org/10.1183/2312508X.10010617 xiii