1. I.K. AKHUNBAEV KYRGYZ STATE MEDICAL ACADEMY, BISHKEK, KYRGYZSTAN
2. “BIKARD” PRIVATE CARDIAC SURGERY CLINIC, BISHKEK, KYRGYZSTAN
3. INTERNATIONAL SCHOOL OF MEDICINE, BISHKEK, KYRGYZSTAN
4. INSTITUTE OF MOUNTAIN PHYSIOLOGY AND MEDICINE OF THE NATIONAL ACADEMY OF SCIENCES KYRGYZ REPUBLIC, BISHKEK, KYRGYZSTAN