1. Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box No 2457 Riyadh, Saudi Arabia
2. Bioavailability Laboratory, College of Pharmacy, King Saud University, PO Box No 2457 Riyadh, Saudi Arabia
3. Clinical Laboratory Sciences, College of Applied Medical Sciences, Taibah University, Medina, Saudi Arabia
4. Consultant, Obesity Centre, College of Medicine, King Saud University, Riyadh, Saudi Arabia