1. Department of Internal Medicine, Cedars-Sinai Medical Center, Los Angeles, USA
2. Department of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, USA
3. Department of Pathology, Cedars-Sinai Medical Center, Los Angeles, USA
4. Department of Nephrology, Cedars-Sinai Medical Center, Los Angeles, USA
5. Department of Gastroenterology, Cedars-Sinai Medical Center, Los Angeles, USA