1. Department of Medical Biochemistry & Molecular Biology, Faculty of Medicine, Menoufia University, Shibin El Kom, Egypt
2. Department of Clinical Biochemistry, Faculty of Medicine, University of Tabuk, Tabuk, Saudi Arabia
3. Rheumatology and Immunology Unit, Internal Medicine Department, Faculty of Medicine, Menoufia University, Shibin El Kom, Egypt
4. Department of Public Health and Community Medicine (Industrial Medicine and Occupational Health Specialty), Faculty of Medicine, Menoufia University, Shibin El Kom, Egypt