1. Division of Rheumatology, Mayo Clinic, Rochester, MN, USA
2. Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine Siriraj Hospital, Mahidol university, Bangkok, Thailand
3. Division of Pulmonology and Critical Care Medicine, Mayo Clinic, Rochester, MN, USA
4. Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA