1. Rheumatology unit, Internal medicine department, University of Babylon College of Medicine, Babylon, Iraq
2. Neurology unit, Internal medicine department, University of Babylon College of Medicine, Babylon, Iraq
3. Neuroscience hospital, Iraqi Board for Medical Specializations, Baghdad, Iraq
4. Rheumatology department, Marjan teaching hospital, Babylon, Iraq
5. Anatomy department, University of Babylon College of Medicine, Babylon, Iraq