1. Department of Internal Medicine, Division of Pulmonary Medicine, The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University College of Medicine, Columbus, OH, USA.
2. Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia.
3. Division of Endocrinology, Department of Medicine, King Khalid University Hospital, Riyadh, Saudi Arabia.
4. Obesity Research Center, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
5. Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Canada.