1. Division of Rheumatology, Department of Internal Medicine, University of Utah School of Medicine, 4B200 30 N. 1900 E., Salt Lake City, UT 84132, USA
2. Division of Gastroenterology, Department of Internal Medicine, University of Utah, 50 N Medical Drive, Salt Lake City, UT 84132, USA
3. Department of Anatomic Pathology, University of Utah, 50 N Medical Drive, Salt Lake City, UT 84132, USA
4. Department of Ophthalmology, University of Utah, 50 N Medical Drive, Salt Lake City, UT 84132, USA
5. Division of Infectious Diseases, Department of Internal Medicine, University of Utah, 50 N Medical Drive, Salt Lake City, UT 84132, USA