1. Doctor of Ultrasound Diagnostics (DUD); Head, Department of Ultrasound Diagnostics, Regional Diagnostic Center, Polyclinic, “Kyiv Regional Clinical Hospital” Public (Communal) Non-profit Enterprise of the Kyiv Region Council, Kyiv, Ukraine.
2. Doctor-Stomatologist-Surgeon (DSS), Doctor of Ultrasound Diagnostics (DUD), PhD; Associate Professor, Department of Oral and Maxillofacial Surgery, Private Higher Educational Establishment “Kyiv Medical University”; “Kyiv Regional Clinical Hospital” Public (Communal) Non-profit Enterprise of the Kyiv Region Council (place of work at moment of material collection), Kyiv, Ukraine.