1. Pulmonary Cell Research, Department Biomedicine & Clinic of Pneumology, University & University Hospital Basel, CH-4031 Basel, Switzerland
2. Department of Chest Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan
3. Institute of Emergency and Critical Care Medicine, National Yang Ming Chiao Tung University, Taipei 11266, Taiwan
4. Thoracic Surgery, University Hospital Vienna, Währinger Gürtel 10-14, 1090 Vienna, Austria
5. Department of Respiratory Diseases, University of Naples, Federico II, via S. Pansini 10, 80131 Naples, Italy
6. Department of Respiratory Diseases, AO dei Colli, via L. Bianchi snc, 80131 Naples, Italy
7. Department of Pneumology, Ordensklinikum Linz/Elisabethinen, Fadingerstr. 1, 4020 Linz, Austria