1 FSBI "National Health and Research Center of Preventive Healthcare" of the Ministry of Health of Russia, Moscow, Russia; FSBI SRC RF "Institute of Biomedical Problems" RAS, Moscow, Russia.
2 Research & Development Center of Biomedical Photonics, Orel State University, Orel, Russia.
3 Research & Development Center of Biomedical Photonics, Orel State University, Orel, Russia; Optoelectronics and Measurement Techniques, University of Oulu, Oulu, Finland.
4 FSBI "National Health and Research Center of Preventive Healthcare" of the Ministry of Health of Russia, Moscow, Russia.
5 Optoelectronics and Measurement Techniques, University of Oulu, Oulu, Finland. Electronic address: [email protected].