1. Section of Rheumatology and Clinical Immunology, Department of General Internal Medicine; and Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
2. Department of Rheumatology and Rehabilitation, Assiut University Faculty of Medicine, Assiut University Hospitals, Assiut, Egypt
3. Department of Health Services Research; and Section of Rheumatology and Clinical Immunology, Department of General Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA