[1] ASAN Med Ctr, Seoul, South Korea
[2] Heidelberg Univ, Thoraxklin, Pneumol, Ctr Interstitial & Rare Lung Dis, Heidelberg, Germany
[3] German Ctr Lung Res, Heidelberg, Germany
[4] Boehringer Ingelheim Pharma GmbH & Co KG, Ingelheim, Germany
[5] Minnesota Lung Ctr Ltd, Minneapolis, MN USA
[6] Heidelberg Univ, Dept Pneumol, Thoraxklin, Heidelberg, Germany
[7] German Ctr Lung Res, Translat Lung Res Ctr Heidelberg, Heidelberg, Germany