1. Department of Radiology, Faculty of Medicine, Chiang Mai University , Chiang Mai 50200, Thailand
2. Department of Family Medicine, Faculty of Medicine, Chiang Mai University , Chiang Mai 50200, Thailand
3. Center for Clinical Epidemiology and Clinical Statistics, Faculty of Medicine, Chiang Mai University , Chiang Mai 50200, Thailand
4. Department of Pathology, Faculty of Medicine, Chiang Mai University , Chiang Mai 50200, Thailand
5. Department of Orthopedics, Faculty of Medicine, Chiang Mai University , Chiang Mai 50200, Thailand
6. Department of Radiology and Biomedical Imaging, University of California, San Francisco , San Francisco, CA 94158, United States