1. Natural
Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7568, United States
2. Research
Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
3. Surgical
Oncology Research Facility, Duke University Medical Center, Box 2926, Durham, North Carolina 27710, United States
4. Chinese
Medicine Research and Development Center, China Medical University and Hospital, 404 Taichung, Taiwan