1. Department of Public Health, Faculty of Medicine, Jordan University of Science and Technology, P.O. Box 3030, Irbid 21110, Jordan
2. Department of Psychology, Virginia Commonwealth University, P.O. Box 842018, Richmond, VA 23284-2018, USA
3. Department of Pediatrics, Faculty of Medicine, Yarmouk University, Irbid 21110, Jordan
4. Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, P.O. Box 3030, Irbid 21110, Jordan
5. Division of Epidemiology, Biostatistics, and Environmental Health, University of Memphis School of Public Health, Memphis, TN 38152, USA