| Postdoctoral Fellow, Lankenau Medical Research Center, Wynnewood, PA. | 2008 |
| Postdoctoral Researcher, University of California Riverside, Riverside, CA. | 2004 |
| Research Associate, Cancer Institute of University of Hokkaido, Sapporo, Japan | 2000 |
| Senior Clinical Fellow, Department of Surgical Oncology, University of Hokkaido, Sapporo, Japan | 1996 |
| Resident, Fellow, and Attending Physician, Department of Surgical Oncology, Tianjin Medical University, Tianjin, China | 1995 |