1. Department of Ophthalmology; University of Cologne; Kerpenerstr. 62 50937 Cologne Germany
2. Institute of Medical Microbiology and Hygiene; University of Lübeck; Germany
3. Institute of Anatomy II, University Hospital; Friedrich-Schiller-University of Jena; Germany
4. Institute of Biomedical Optics; University of Lübeck; Germany
5. Member of the German Center for Lung Research (DZL); Germany