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Reda Fawzy Ali, Khalid Ahmed Ismail, Taha Ahmed Ismail, Ahmed Lamey Ahmed Saleh, Ahmed Mahmoud Aouf, Mohamed Ahmed Tolba ElKhopy. Effect of laparoscopic sleeve gastrectomy on vitamin D, parathormone hormone, and serum calcium levels. J Pak Med Assoc [Internet]. 2023 May 25 [cited 2024 Nov. 11];73(4):S174-S178. Available from: https://jpma.org.pk/index.php/public_html/article/view/9850