Donald N Mitchell MD FRCP Hon Consultant Physician Royal Brompton and University College Hospitals London, UK David R Moller MD Professor of Medicine and Director Sarcoidosis Clinic and Research Program Department of Medicine The Johns Hopkins University School of Medicine Baltimore, Maryland, USA Stephen G Spiro BSc MD FRCP Professor of Respiratory Medicine and Honorary Consultant Physician University College London and The Royal Brompton Hospital London, UK Athol Wells MBChB MD FRACP FRCP FRCR Professor of Respiratory Medicine and Head of Interstitial Lung Disease Unit The Royal Brompton Hospital London, UK |