University of California, San Francisco (UCSF) - Rheumatology Division, University of California, San Francisco (UCSF) - Department of Microbiology and Immunology, University of California, San Francisco (UCSF) - Department of Microbiology and Immunology, University of California, San Francisco (UCSF) - Department of Microbiology and Immunology, Pennsylvania State University - Department of Veterinary and Biomedical Sciences, Pennsylvania State University - Department of Veterinary and Biomedical Sciences, CIBER de Epidemiología y Salud Pública (CIBERESP), New York University (NYU) - Department of Medicine and University of California, San Francisco (UCSF) - Department of Microbiology and Immunology

University of California, San Francisco (UCSF) - Rheumatology Division, University of California, San Francisco (UCSF) - Department of Microbiology and Immunology, University of California, San Francisco (UCSF) - Department of Microbiology and Immunology, University of California, San Francisco (UCSF) - Department of Microbiology and Immunology, CIBER de Epidemiología y Salud Pública (CIBERESP), New York University (NYU) - Department of Medicine and University of California, San Francisco (UCSF) - Department of Microbiology and Immunology