- Director of Department of Oncology, National Cheng Kung University
- Director of Department of Oncology, National Cheng Kung University Hospital
- Director of Department of Oncology, College of Medicine, National Cheng Kung University
- Director of Cancer Center, National Cheng Kung University Hospital
- Professor, Department of Oncology, College of Medicine, National Cheng Kung University
- Professor, Department of Internal Medicine, College of Medicine, National Cheng Kung University
- Professor, Department of Pharmacology, College of Medicine, National Cheng Kung University
- Professor, Institute of Clinical Medicine, College of Medicine, National Cheng Kung University
- Director, First Term, Taiwan Gastric Cancer Association
- Director, Third Term, Taiwan Neuroendocrine Tumor Society
- Supervisor, Taiwan Oncology Society
- Standing Director, Seventh Term, Taiwan Head and Neck Society
- Deputy Director, Clinical Trial Center, National Cheng Kung University Hospital
- Associate Professor, Department of Oncology, College of Medicine, National Cheng Kung University
- Assistant Professor, Department of Internal Medicine, College of Medicine, National Cheng Kung University
- Attending Physician, Medical Oncology and Hematology, National Cheng Kung University Hospital
- Residency, Internal Medicine, National Cheng Kung University Hospital
- Fellow, Medical Oncology and Hematology, National Cheng Kung University Hospital
- Visiting Scholar, MD Anderson Cancer Center, USA
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