A. O. Guz
Chelyabinsk Regional Clinical Oncology Center, Chelyabinsk; South Ural State Medical University, Chelyabinsk
Russian Federation

MD, Chief of Head and Neck Department

42, Bluhera str., 454087-Chelyabinsk

64, Vorovskogo str., 454092-Chelyabinsk 

A. S. Zakharov
Chelyabinsk Regional Clinical Oncology Center, Chelyabinsk; South Ural State Medical University, Chelyabinsk
Russian Federation

MD, Physician, Head and Neck Department

42, Bluhera str., 454087-Chelyabinsk

64, Vorovskogo str., 454092-Chelyabinsk 

A. V. Garev
Chelyabinsk Regional Clinical Oncology Center, Chelyabinsk; South Ural State Medical University, Chelyabinsk
Russian Federation

MD, Head and Neck Department

42, Bluhera str., 454087-Chelyabinsk

64, Vorovskogo str., 454092-Chelyabinsk