1. Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
2. Diabetes Unit, Derby Hospitals NHS Foundation Trust, Derby, UK
3. Department of Clinical and Transplant Immunology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
4. Department of Clinical Biochemistry, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
5. Department of Clinical Microbiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic