1. Oral Cancer Research Center, Changhua Christian Hospital, Changhua 500, Taiwan, R.O.C.
2. Department of Otorhinolaryngology‑Head and Neck Surgery, Changhua Christian Hospital, Changhua 500, Taiwan, R.O.C.
3. Department of Medical Research, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan, R.O.C.
4. Department of Biotechnology and Laboratory Science in Medicine, National Yang‑Ming University, Taipei 112, Taiwan, R.O.C.
5. The Center for General Education of China Medical University, China Medical University, Taichung 404, Taiwan, R.O.C.
6. Department of Biochemical Science and Technology, National Chiayi University, Chiayi 60004, Taiwan, R.O.C.