A. M. Abudayyak Bahaa
St. Petersburg State University
Russian Federation

Bahaa A.M. Abudayyak — ophthalmologist, PhD student, chair of otorhinolaryngology and ophthalmology.

7/9, Universitetskaya emb., St. Petersburg, 199034

V. P. Nikolaenko
St. Petersburg State University; City Multidisciplinary Hospital No. 2
Russian Federation

Vadim P. Nikolaenko — Dr. of Med. Sci., professor, chair of otorhinolaryngology and ophthalmology, St. Petersburg State University; deputy head doctor for ophthalmology, City Multidisciplinary Hospital No. 2.

7/9, Universitetskaya emb., St. Petersburg, 199034; 5, Uchebnyy lane, St. Petersburg, 194354