1. Department of Public Health, Semey Medical University, Semey, Kazakhstan
2. Department of Science and Human Resources, Ministry of Health of the Republic of Kazakhstan, Astana, Kazakhstan
3. College of Asia Pacific Studies, Ritsumeikan Asia Pacific University, Beppu, Japan
4. Department of Clinical Oncology and Nuclear Medicine, Semey Medical University, Semey, Kazakhstan
5. Department of Epidemiology and Biostatistics, Semey Medical University, Semey, Kazakhstan