1. Institute of Lung Diseases, Institutski put 4 21204, Sremska, Kamenica, Serbia
2. BioIRC Centre for Biomedical Research, Serbia
3. University Clinic, Barcelona, Spain
4. University Hospital to East Slovakia Institute of Oncology, Kosice, Slovakia
5. University Hospital, Santiago de Compostela, Spain
6. Inselspital, Bern, Switzeland
7. Cleveland Clinic, Cleveland, USA
8. Institute of Oncology of Vojvodina, Sremska Kamenica, Serbia