1. Department of Oncology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510630, P.R. China
2. Department of Endocrinology and Metabolism, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510630, P.R. China
3. Department of Genetics, Yale School of Medicine, New Haven, CT 06510, USA
4. Cancer Research Institute, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
5. Central Laboratory, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, P.R. China