1. Lombardi Comprehensive Cancer Center, Department of Oncology, Georgetown University, Washington, DC, USA;
2. Department of Biochemistry, National Defense Medical Center, Taipei, Taiwan;
3. Division of Hematology/Oncology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan;
4. School of Medicine, National Defense Medical Center, Taipei, Taiwan;
5. Langley High School, McLean, VA, USA;
6. Department of Gastroenterology, Henan Provincial People’s Hospital, Zhengzhou, China