M.A. Stefanovich
Leading Engineer, JSC "Research Institute
of a Long-distance Radio Communication" Scientific-Industrial Complex” (Sankt-Petersburg)
E-mail: marg.stefanovich@yandex.ru
S.V. Levin
Ph.D. (Med.), Senior Research Scientist, Saint-Petersburg Institute of Ear, Nose, Throat, and Speech
E-mail: megalor@gmail.com