1. Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
2. Universität Zürich, Institute of Medical Microbiology, Gloriastrasse 30, CH-8006 Zürich, Switzerland
3. Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
4. Division of Clinical Bacteriology and Mycology, University Hospital Basel, 4031 Basel, Switzerland