1. Division of Rheumatology, Mayo Clinic, Rochester, MN, USA
2. Division of Rheumatology, Mayo Clinic, Scottsdale, AZ, USA
3. Department of Radiology, University of Michigan, Ann Arbor, MI, USA
4. Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, MI, USA
5. Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA