1. UNIVERSITY OF HEALTH SCIENCES, TRABZON KANUNİ HEALTH RESEARCH CENTER, DEPARTMENT OF SURGICAL MEDICAL SCIENCES, DEPARTMENT OF GENERAL SURGERY
2. UNIVERSITY OF HEALTH SCIENCES, ANKARA KEÇİÖREN HEALTH RESEARCH CENTER, DEPARTMENT OF SURGICAL MEDICAL SCIENCES, DEPARTMENT OF GENERAL SURGERY
3. HITIT UNIVERSITY, SCHOOL OF MEDICINE, DEPARTMENT OF SURGICAL MEDICAL SCIENCES, DEPARTMENT OF GENERAL SURGERY
4. ANKARA YILDIRIM BEYAZIT UNIVERSITY, SCHOOL OF MEDICINE, DEPARTMENT OF BASIC MEDICAL SCIENCES (MEDICINE), DEPARTMENT OF MEDICAL BIOCHEMISTRY (MEDICINE)