ERS | monograph Guest Editors R. Graham Barr R. Graham Barr is Associate Professor of Medicine, Associate Professor of Epidemiology, and Chief of the Division of General Medicine at Columbia University Medical Center (New York, NY, USA). He is a general internist and respiratory epidemiologist. He received his medical degree from McGill University (Montreal, QC, Canada), before undertaking residency training at Columbia Presbyterian Medical Center (New York, NY, USA). He went on to undertake a fellowship at Massachusetts General Hospital (Boston, MA, USA), a respiratory epidemiology fellowship at the Channing Laboratory (Brigham and Women’s Hospital, Boston, MA, USA), and a doctorate in epidemiology from Harvard School of Public Health (Boston, MA, USA). Graham Barr’s research interests lie in emphysema and COPD, with a particular focus on pulmonary vascular damage and its role in cardiopulmonary function. He uses novel imaging approaches (CT and MRI) applied to population-based samples and is principal investigator of the Multi-Ethnic Study of Atherosclerosis (MESA) Lung Study, the MESA COPD Study, and the Columbia Clinical Center of SPIROMICS (Subpopulations and Intermediary Outcome Measures in COPD Study), in addition to running the spirometry reading centre for the Hispanic Community Health Study and the Long Life Family Study. David G. Parr David G. Parr is Clinical Director for the Cardio-Respiratory Division and Consultant Respiratory Physician at University Hospital Coventry (Coventry, UK). He trained at the University of Cambridge (Cambridge, UK), the London Hospital Medical College at the University of London (London, UK) and the University of Birmingham (Birmingham, UK). His clinical interests include COPD and α1-antitrypsin deficiency, pulmonary vascular disease and interstitial lung disease, and his research interest is in quantitative imaging of chronic lung diseases. Copyright ©ERS 2015. Print ISBN: 978-1-84984-065-1. Online ISBN: 978-1-84984-066-8. Print ISSN: 2312-508X. Online ISSN: 2312-5098. ERS Monogr 2015 70: vi–vii. DOI: 10.1183/2312508X.10000916 vi