1. Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007
Katowice, Poland
2. Institute of Non Ferrous Metals, ul. Sowinskiego 5, 44-100 Gliwice, Poland
3. Institute of Chemistry, Faculty
of Mathematics, Physics and Chemistry, University of Silesia. ul. Szkolna 9, 40-007 Katowice, Poland
4. ENT Department, Silesian Medical University, ul. Francuska 20, Katowice, Poland