1. Department of Computer Science, Brown University, Providence, Rhode Island, USA
2. Department of Economics, Brown University, Providence, Rhode Island, USA
3. Department of General Surgery, E-Da Cancer Hospital, I-Shou University, Kaohsiung, Taiwan
4. School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
5. Department of Medical Education and Research, E-Da Cancer Hospital, I-Shou University, Kaohsiung, Taiwan