Ibrahim, Samar Jassim, et al. “Effects of Sleeve Gastrectomy on Thyrotropin Hormone (TSH) and Vitamin D Levels Among Obese Patients in Nineveh Governorate”. Journal of Contemporary Medical Sciences, vol. 9, no. 4, Aug. 2023, pp. 286-90, doi:10.22317/jcms.v9i4.1408.