1. Department of Dermatology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
2. Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
3. Department of Public Health, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan, Irbid, Jordan
4. Department of Mathematics and Statistics, Jordan University of Science and Technology, Irbid, Jordan