1. Institute of Physics, Czech Academy of Sciences, Prague, Czech Republic;
2. Institute of Photonics and Electronics, Czech Academy of Sciences, Prague, Czech Republic;
3. 1st Faculty of Medicine, Department of Obstetrics and Gynaecology, Charles University, Prague, Czech Republic;
4. Faculty of Electrical Engineering, Czech Technical University in Prague, Prague, Czech Republic;
5. Faculty of Biomedical Engineering, Czech Technical University in Kladno, Kladno, Czech Republic