1. Department of Neurology, Ophthalmology and Otolaryngology, Semey Medical University, Semey, Kazakhstan.
2. Department of Personalized Medicine, Semey Medical University, Semey, Kazakhstan.
3. Department of Internal Medicine, Semey Medical University, Semey, Kazakhstan.
4. Department of Public Health, Semey Medical University, Semey, Kazakhstan.
5. Head Office, Semey Medical University, Semey, Kazakhstan.
6. Head Office, Regional Oncology Hospital, Semey, Kazakhstan.
7. Postgraduate Department, Kazakh Medical University of Continuing Education, Almaty, Kazakhstan.