1. Department of Pathology and Cytology, Division of Pulmonary Cytology Jordanovac University Hospital Centre Zagreb Zagreb Croatia
2. Department for Biology, Division of Molecular Biology, Faculty of Science University of Zagreb Zagreb Croatia
3. Primary School “Sesvetski Kraljevec” Sesvetski Kraljevec Croatia
4. Department of Respiratory Diseases Jordanovac University Hospital Centre Zagreb Zagreb Croatia
5. School of Medicine University of Zagreb Zagreb Croatia