[1] Inst Lung Dis Vojvodina, Dept Pathol, Sremska Kamenica 21234, Serbia
[2] Inst Lung Dis Vojvodina, Clin Thorac Surg, Sremska Kamenica 21234, Serbia
[3] Suny Downstate Med Ctr, Dept Pathol, Brooklyn, NY 11203 USA
[4] Clin Ctr Vojvodina, Dept Neurol, Novi Sad 21000, Serbia
[5] Inst Lung Dis Vojvodina, Pulmol Dept, Sremska Kamenica 21234, Serbia