1. Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of
Sciences, Guangzhou 510275, China
2. School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
3. Department of
Pediatrics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China
4. Department of Gastrointestinal Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen
University, Guangzhou 510120, China