1. Research‐Educational Institute of Optics and Biophotonics, Saratov State University Saratov Russia
2. Interdisciplinary Laboratory of Biophotonics, Tomsk State University Tomsk Russia
3. Department of Pathological AnatomySaratov State Medical University Saratov Russia
4. Laboratory of Laser Diagnostics of Technical and Living SystemsInstitute of Precision Mechanics and Control of the Russian Academy of Sciences Saratov Russia