1. Department of Internal Medicine, Cardiology and Critical Care Unit, Assiut University Hospital, Assiut, Egypt
2. Department of Internal Medicine, resident in Internal Medicine Department, Assiut University Hospital, Assiut, Egypt
3. Department of Internal Medicine, Rheumatology Department, Assiut University Hospital, Assiut, Egypt
4. Department of Internal Medicine, Nephrology Unit, Assiut University Hospital, Assiut, Egypt