1. University Hospital Osijek, Osijek, Croatia
2. JJ Strossmayer University of Osijek, Faculty of Medicine, Osijek, Croatia
3. Institute for Medical Research and Occupational Health, Zagreb, Croatia
4. Polyclinic Drinković, Zagreb, Croatia
5. JJ Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences, Osijek, Croatia
6. University of Zagreb, School of Medicine, Zagreb, Croatia
7. Croatian Catholic University, Zagreb, Croatia
8. MyBiotech, Überherrn, Germany