edited by Biji T. Kurien, Arthritis and Clinical Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA, Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA, Department of Veterans Affairs Medical Center, Oklahoma City, OK, USA, R. Hal Scofield, Arthritis and Clinical Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA, Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA, Department of Veterans Affairs Medical Center, Oklahoma City, OK, USA.