1. Clinic for Respiratory Diseases Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
2. College of Medicine, QU Health, Qatar University, Doha 2713, Qatar
3. Department of Oncology, University Clinical Hospital Mostar, 88000 Mostar, Bosnia and Herzegovina
4. Department of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia