1. Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Hvidovre Hospital , Kettegård Alle 30, DK2650 Hvidovre, Denmark
2. Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen , Stigbøjlen 4, 1870 Frederiksberg C, Denmark
3. Core Facility for Integrated Microscopy, Faculty of Health and Medical Sciences, University of Copenhagen , Blegdamsvej 3, 2200 Copenhagen N, Denmark
4. Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen , Blegdamsvej 3, 2200 Copenhagen N, Denmark