1. Key Laboratory of Molecular Biology, Hainan Medical University, Haikou, China
2. Haikou Customs, District P. R. China, Haikou, China
3. Hainan-branch Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Haikou 570311, China
4. Department of Biochemistry and Molecular Biology, Hainan Medical University, Haikou, China