I.H. Ozata, M.D., PhD student at Koc University School of Medicine, Koc Universitesi, Istanbul, Istanbul, TURKEY|T. Tüfekçi, C. Turkish Validation Group, M.D., Koc University School of Medicine, Koc Universitesi, Istanbul, Istanbul, TURKEY|O. Ozturk, MSc, PhD student, Clinical Research Nurse, Koc Universitesi, Istanbul, Istanbul, TURKEY|A. Baygul, Dr., Biostatistician, Koc Universitesi, Istanbul, Istanbul, TURKEY|A. Karadag, Dean and Professor, Koc University School of Nursing, Koc Universitesi, Istanbul, Istanbul, TURKEY|D. Bugra, Professor of Surgery, Koc University School of Medicine and Vehbi Koc Foundation American Hospital, Koc Universitesi, Istanbul, Istanbul, TURKEY|E. Balik, Professor of Surgery, Koc University School of Medicine, Koc Universitesi, Istanbul, Istanbul, TURKEY|