1. From Guy’s Severe Asthma Centre, Guy’s and St. Thomas’ NHS Foundation Trust, and the School of Immunology and Microbial Sciences, King’s College London (David J. Jackson), Barts Health NHS Trust (P.E.P.), and GSK (L.J., N.B., S.S., P.H.), London, and the Oxford Respiratory NIHR Biomedical Research Centre, Nuffield Department of Clinical Medicine, University of Oxford, Oxford (I.D.P.) — all in the United Kingdom; National Jewish Health, Denver (M.E.W.); the University of Wisconsin–Madison, Madison ...