1. Department of Surgery, Tbilisi State Medical University and Kipshidze Central University Hospital, Tbilisi, Georgia
2. Department of Microbiology and Immunology, Tbilisi State Medical University and NeoLab, Tbilisi, Georgia
3. Thoracoabdominal Clinic Ltd, Tbilisi, Georgia
4. Department of Surgery, Tbilisi State Medical University and Aladashvili Clinic, Tbilisi, Georgia