1. Faculty of Medicine and Health Sciences, Drugs and Toxicology Division, An-Najah National University, Nablus, Palestine, 00970. P.O. Box 7
2. Faculty of Medicine and Health Sciences, Department of Medicine, An-Najah National University, Nablus, Palestine, 00970. P.O. Box 7
3. Department of Medical Laboratory, Thabet-Thabet Hospital, Palestinian Ministry of Health, Ramallah, Palestine, 00970. P.O. Box 1938