1. Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipe 10617, Taiwan
2. National Taiwan University Veterinary Hospital, College of Bioresources and Agriculture, National Taiwan University, Taipei 10672, Taiwan
3. Graduate Institute of Veterinary Clinical Science, School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
4. Department of Radiation Therapy & Oncology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei 11101, Taiwan