[1] Franciscus Gasthuis & Vlietland, Dept Surg, Rotterdam, Netherlands
[2] Metab Surg Clin, Istanbul, Turkey
[3] GATA Haydarpasa Training & Res Hosp, Dept Endocrinol, Istanbul, Turkey
[4] Kirloskar Hosp, Bariatr & Metab Surg Clin, Hyderabad, Telangana, India
[5] Near East Univ, Fac Med, Dept Biostat, Nicosia, Cyprus