1. Nutritional Chemistry and Metabolism Department, National Nutrition Institute, Cairo, Egypt
2. Clinical Pathology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
3. Biochemistry Division, Chemistry Department, Faculty of Science, Al-Azhar University, Cairo, Egypt
4. National Institute of Urology and Nephrology, Cairo, Egypt
5. Chemistry Department, Faculty of Science, Al-Azhar University, Cairo, Egypt