1. Department of Radiologic Technology, Faculty of Associated Medical Sciences Chiang Mai University Chiang Mai Thailand
2. Department of Radiologic Technology, Faculty of Associated Medical Sciences, Center of Radiation Research and Medical Imaging Chiang Mai University Chiang Mai Thailand
3. Department of Physiology, Faculty of Medicine Chiang Mai University Chiang Mai Thailand
4. Department of Physiology University of Medicine 2, Yangon Yangon Myanmar