1. Department of Periodontics, College of Dentistry, University of Sulaimani, Sulaymaniyah 46001, Iraq
2. Medical Laboratory Department, College of Health and Medical Technology, Sulaimani Polytechnic University, Sulaymaniyah 46001, Iraq
3. Department of Dental Nursing, Sulaimani Technical Institute, Sulaimani Polytechnic University, Sulaymaniyah 46001, Iraq