1 Divison of Connective Tissue Disease (Rheumatology), Department of Medicine, The University of Tennessee Health Science Center, 956 Court Avenue, Suite G326, Memphis, TN, 38163-0001, USA; Section of Immunology, Allergy and Rheumatology, Department of Medicine, Biology of Inflammation Center, Baylor College of Medicine, Houston, TX, USA. Electronic address: mbittar@uthsc.edu.
2 Section of Immunology, Allergy and Rheumatology, Department of Medicine, Biology of Inflammation Center, Baylor College of Medicine, Houston, TX, USA.