1. Department of Physiology, Basic Medical College of Putian University, Putian, Fujian 351100, P.R. China
2. Institute for Immunology, Academy of Medical Sciences of Fujian, Fuzhou, Fujian 350001, P.R. China
3. Department of General Surgery, Affiliated Hospital of Putian University, Putian, Fujian 351100, P.R. China