1. Diagnostic Imaging, Sutter Medical Group, 3161 L Street, Sacramento, CA 95814, USA
2. University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143, USA
3. Radiological Associates of Sacramento Medical Group, 1500 Expo Parkway, Sacramento, CA 95815, USA
4. Radiation Oncology Center, Sutter Medical Group, 2800 L Street, Sacramento, CA 95816, USA