[1] Univ Zagreb, Merkur Univ Hosp, Univ Dept Med Biochem & Lab Med, Zagreb 10000, Croatia
[2] Univ Zagreb, Fac Pharm & Biochem, Dept Med Biochem & Haematol, Zagreb 10000, Croatia
[3] Dr Ivo Pedisic Gen Hosp, Dept Pulmol, Petrinja, Croatia
[4] Univ Zagreb, Zagreb Univ Hosp Ctr, Jordanovac Univ Hosp Lung Dis, Sch Med, Zagreb 10000, Croatia