A.  O.  Atroshchenko
Department of Surgery and Oncology, Faculty of Postgraduate Medical Education, Peoples’ Friendship University of Russia; Department of Coloproctology, Ilyinskaya Hospital
Russian Federation

Andrey Olegovich Atroshchenko 

6 Miklukho-Maklaya St., Moscow 117198

Build. 2, 2 Rublevskoe Predmestye, Glukhovo, Krasnogorsk 143421

D.   O. Kiselev
Department of Ultrasound Diagnostics, A.N. Ryzhikh National Medical Research Center of Coloproctology, Ministry of Health of Russia
Russian Federation

2 Salyama Adilya St., Moscow 123423

S.   V. Pozdnyakov
Department of Coloproctology, Federal Research and Clinical Center for Specialized Medical Care and Medical Technologies, Federal Medical and Biological Agency of the Russian Federation
Russian Federation

28 Orekhovyy Bulvar, Moscow 115682

A.   V. Teterin
Center of Coloproctology, St. Aleksey Central Clinical Hospital
Russian Federation

27 Leninskiy Prospekt, Moscow 119071

D.   L. Davidovich
Department of Purulent Surgery and Coloproctology, M.P. Konchalovsky City Clinical Hospital, Moscow Healthcare Department
Russian Federation

Build. 1, 2 Kashtanovaya Alleya, Zelenograd, Moscow 124489