1. Key Laboratory of Stem Cell Engineering and Regenerative Medicine, Fujian Province University
2. Department of Human Anatomy, Histology and Embryology, Fujian Medical University, Fuzhou, P. R. China
3. Fujian Key Laboratory of Medical Bioinformatics, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, P. R. China
4. Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, P. R. China