1. Chiang Mai University Faculty Of Medicine, Department Of Radiology, Chiang Mai, Thailand

2. Chiang Mai University Faculty Of Medicine, Clinical Epidemiology Unit, Chiang Mai, Thailand

3. Chiang Mai University Faculty Of Medicine, Department Of Surgery, Chiang Mai, Thailand

4. Chiang Mai University The Research Institute For Health Sciences, Chiang Mai, Thailand

5. Chiang Mai University Faculty Of Medicine, Department Of Internal Medicine, Chiang Mai, Thailand