1. Nuclear Science and Technology Development Center, National Tsing Hua University, Hsinchu, Taiwan
2. Graduate Institute of Veterinary Pathobiology, National Chung Hsing University, Taichung, Taiwan
3. Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
4. Department of Medical Imaging, Chung Shan Medical University Hospital, Taichung, Taiwan