1. Department of Gastrointestinal Surgery, Kartal Kosuyolu Training and Research Hospital, Istanbul, Turkey
2. Department of Pharmacology, School of Medicine, Yeditepe University, Istanbul, Turkey
3. Department of Physiology, School of Medicine, Istanbul Medipol University, Istanbul, Turkey
4. Division of Gastrointestinal Surgery, Department of General Surgery, School of Medicine, Istanbul Medeniyet University, Goztepe Training and Research Hospital, Istanbul, Turkey