1. Surgical Research Section, Department of Surgery, Hamad Medical Corporation, Doha, Qatar
2. Department of Public Health, QU-Health, College of Health Sciences, Qatar University, Doha, Qata
3. Department of Nursing, Hamad Medical Corporation, Doha, Qatar
4. College of Pharmacy, QU Health, Qatar University, Doha, Qata
5. Department of Chemistry, Jordan University of Science and Technology, Irbid, Jordan
6. College of Medicine, Qatar University, Doha, Qatar
7. School of Medicine, Dentistry and Nursing, The University of Glasgow, Glasgow, UK