Affiliation: | (1) Section of Rheumatology-Clinical Immunology, TB 192, Department of Internal Medicine, University of California, School of Medicine, 95616 Davis, California, USA;(2) Department of Surgery, University of California, School of Medicine, 90024 Los Angeles, California, USA;(3) Department of Physical Medicine and Rehabilitation, University of California, School of Medicine, 95616 Davis, California, USA |