1. Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California 94158, United States
2. Department of Medicine, University of California, San Francisco, San Francisco, California 94158, United States
3. Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, California 94158, United States
4. Department of Radiology, Zuckerberg San Francisco General Hospital, San Francisco, California 94110, United States