1. Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
2. Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Chinese medicine, Shanghai 200032, China
3. Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, USA
4. Department of Chemistry, University of South Florida, Tampa, FL 33620, USA