RELATIONSHIP BETWEEN PRE-OPERATIVE BODY MASS INDEX AND LENGTH OF OPERATION OF LAPAROSCOPIC SLEEVE GASTRECTOMY - Sufana Amer Alotaibi *, Hind Ahmed Alnassar , Rana Rasheed Al-Rasheed , Saleh Jaman Alghamdi , Abdulmajeed Osamah Rajkhan, Turki Khalid Albawardi , Atif Omar Alhawsah , Huda Maitham Alasfoor , Masooma Alnoaimi , Turki Rashid Alsudairi (2018)