1. Department of Internal Medicine, Southern California Permanente Medical Group, Fontana, CA 92335, USA
2. Department of Dermatology, Southern California Permanente Medical Group, Fontana, CA 92335, USA
3. Department of Pathology, Southern California Permanente Medical Group, Fontana, CA 92335, USA
4. Department of Rheumatology, Southern California Permanente Medical Group, Fontana, CA 92335, USA
5. Department of Infectious Diseases, Southern California Permanente Medical Group, Fontana, CA 92335, USA