1. German Center for Lung Research (DZL), Justus-Liebig University of Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany (B.K., J.W., M.K., H.A.G., F.G., N.W., W.S., R.T.S.).
2. PerkinElmer, Waltham, MA (A.B.).
3. Kanazawa Medical University, Ishikawa, Japan (S.S., S.M.).
4. Max-Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (W.S.).