1. From the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Alabama at Birmingham, Birmingham (S.P.B.); LungenClinic Grosshansdorf (member of the German Center for Lung Research [DZL]), Airway Research Center North (ARCN), Grosshansdorf (K.F.R.), Christian–Albrechts University, DZL, ARCN, Kiel (K.F.R.), and the Department of Medicine, Pulmonary and Critical Care Medicine, University of Marburg, DZL, Marburg (C.F.V.) — all in Germany; the Section on Pulmonary and Critical Care...