1. Division of Oncology,
2. Department of Internal Medicine, Stem Cell Program, University of California Davis, Sacramento, CA, USA;
3. Department of Developmental Biology, and
4. Molecular Imaging Center, Mallinckrodt Institute of Radiology, Washington University, School of Medicine, St. Louis, MO, USA;
5. School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China; and
6. Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China