1. School of Chinese Medicine, China Medical University, Taichung 404, Taiwan
2. Graduate Institute of Biostatistics, China Medical University, Taichung 404, Taiwan
3. Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan
4. Department of Radiation Oncology, Columbia University, New York, NY 10032, USA
5. Department of Biochemical Science and Technology, National Chiayi University, Chiayi 600, Taiwan
6. Institute of Traditional Medicine, National Yang-Ming University, Taipei 112, Taiwan
7. Department of Radiation Oncology and Department of Medical Research, Mackay Memorial Hospital, 92 Chung-Shan North Road, Section 2, Taipei 104, Taiwan