1. a The Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine , Ghent University , Salisburylaan 133, 9820 , Merelbeke , Belgium
2. b Clinic for Birds, Reptiles, Amphibians and Fish , Justus Liebig University , Frankfurter Straβe 91–93, 35392 , Giessen , Germany
3. c Laboratory of Pharmaceutical Microbiology, Department of Pharmaceutical Analysis , Faculty of Pharmaceutical Sciences, Ghent University , Harelbekestraat 72, 9000 , Gent , Belgium