Characterization of Severe Asthma Worldwide

University of Colorado Hospital, National Jewish Health, University of Colorado Denver, AstraZeneca (Japan), Queen's University Belfast, University of Plymouth, Royal Brompton & Harefield NHS Foundation Trust, King's College London, Asthma UK, Queen Mary University of London, Barts Health NHS Trust, The Catholic University of Korea Seoul St. Mary's Hospital, Catholic University of Korea, Ulsan College, Asan Medical Center, University of Ulsan, Humanitas University, John Hunter Hospital, Hunter Medical Research Institute, Monash Health, Alfred Health, Monash University, Concord Repatriation General Hospital, AstraZeneca (United Kingdom), University of Aberdeen, Observational & Pragmatic Research Institute