1. Section of Rheumatology and Clinical Immunology, Department of Medicine, and Division of Oral and Maxillofacial Surgery, Department of Stomatology, University of California, San Francisco 94143
2. Department of Medicine, University of California, San Francisco 94143
3. Department of Anatomy, University of California, San Francisco 94143
4. Section of Bone Radiology, Department of Radiology, University of California, San Francisco 94143
5. Department of Neurology, Massachusetts General Hospital Boston 02114