1. Department of Radiology, University of California, Davis, Medical Center, 4860 Y St, Ste 3100, Sacramento, CA 95817.
2. Department of Orthopaedic Surgery, University of California, Davis, Medical Center, Sacramento, CA.
3. University of California, Davis, School of Medicine, Sacramento, CA.
4. Department of Public Health Sciences, University of California, Davis, Sacramento, CA.