I. A. Ozerskaya
Peoples' Friendship University of Russia (RUDN University) 
Russian Federation

Irina A. Ozerskaya –  Doct. of Sci. (Med.), Professor, Professor of the Department of Ultrasound Diagnostics of the Faculty of Continuing Medical
Education of the Medical Institute 

 6, Miklukho-Maklaya str., Moscow 117198, Russian Federation

M. A. Chekalova
Peoples' Friendship University of Russia (RUDN University) 
Russian Federation

Marina A. Chekalova –  Doct. of Sci. (Med.), Professor, Professor of the Department of Ultrasound Diagnostics of the Faculty of Continuing Medical
Education of the Medical Institute

 6, Miklukho-Maklay str., Moscow 117198, Russian Federation 

V. A. Ivanov
Peoples' Friendship University of Russia (RUDN University) 
Russian Federation

Vladimir A. Ivanov –  Doct. of Sci. (Med.), Professor, Head of the Department of Ultrasound Diagnostics of the Faculty of Continuous Medical Education of the Medical Institute 

 6, Miklukho-Maklay str., Moscow 117198, Russian Federation 

G. G. Kazaryan
LLC “Medskan”
Russian Federation

 Gayane G. Kazaryan – Cand. of Sci. (Med.), Head of the department of ultrasound

 21A, Obrucheva str., Moscow 119421, Russian Federation