1. Lungen-und Atmungsstiftung Bern, Bern, Switzerland
2. Pneumology, Clinic for General Internal Medicine, Lindenhofspital Bern, Bern, Switzerland
3. Berner Augenklinik Am Lindenhofspital, Bern, Switzerland
4. Vascular Biology Center, Medical College of Georgia, University of Augusta, Augusta, Georgia, USA
5. Department of Ophthalmology, Inselspital, University of Bern, Bern, Switzerland
6. Medical Clinic V-Pneumology, Allergology, Intensive Care Medicine and Environmental Medicine, Faculty of Medicine, Saarland University, University Medical Centre of the Saarland, Homburg, Germany
7. Institute for Clinical & Experimental Surgery, Faculty of Medicine, Saarland University, Homburg, Germany