1. Department of Medical Physics and Bioengineering, Ural State Medical University, 3 Repin Street, Yekaterinburg 620028, Russia
2. Institute of Natural Science and Mathematics, Ural Federal University, 19 Mira Street, Yekaterinburg 620002, Russia
3. Institute of Electrophysics UB RAS, 106 Amundsen Street, Yekaterinburg 620016, Russia
4. Departamento de Electricidad y Electrónica, Universidad del País Vasco UPV/EHU, Bilbao 48080, Spain