a
Regional Centre of Advanced Technologies and Materials, Palacky University, 17. listopadu 12, 77146 Olomouc, Czech Republic
E-mail: giorgio.zoppellaro@upol.cz
;
Fax: +420 58 563 4958
;
Tel: +420 58 563 497
b
Faculty of Medicine and Dentistry, Palacky University, 77146 Olomouc, Czech Republic
c
Graz University of Technology, Institute of Medical Engineering, A–8010 Graz, Austria