1. Department of Infectious DiseasesMurska Sobota General Hospital 9000 Murska Sobota Slovenia
2. Institute of Microbiology and Immunology, Faculty of MedicineUniversity of Ljubljana 1000 Ljubljana Slovenia
3. Institute for Biostatistics and Medical Informatics, Faculty of MedicineUniversity of Ljubljana 1000 Ljubljana Slovenia
4. Department of Infectious DiseasesUniversity Medical Centre Ljubljana 1000 Ljubljana Slovenia