1 | Division of Pulmonary Medicine, Internal Medicine, University Hospitals of Homburg/ Saar, Saarland University, Homburg/Saar, Germany |
2 | Clinic of Pulmonary Medicine and Respiratory Cell Research, University Hospital Basel, Basel, Switzerland |
3 | Division of Pain Medicine, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil GmbH, Bochum, Germany |
4 | Divison of Internal Medicine, Hospital of Münsingen, Münsingen, Switzerland |
5 | University Hospital of Psychiatry, Bern, Switzerland |
6 | Clinic of Internal Medicine, Lindenhofspital, Bern, Switzerland |
7 | Clinic Sonnenhalde, Riehen, Switzerland |
8 | Division of Assessment und Evaluation, Institute for Medical Teaching, University of Bern, Bern, Switzerland |
9 | Department of Cardiology and Pneumology, University Hospital Göttingen, Göttingen, Germany |
10 | Department of Behavioral Therapy and Psychosomatic Medicine, Rehabilitation Center Seehof, Federal German Pension Agency, Teltow, Germany |
11 | Medical Faculty, Saarland University Hospitals, Homburg/Saar, Germany |