国家自然科学基金81170331,81370490;第四军医大学唐都医院科技创新发展基金2014LCYJ005;博福-益普生腹泻基金IDF-2007-04Natural Science Foundation of China81170331,81370490;Science and Technology Innovation Development Fundation of Tangdu Hospital of The Fourth Military Medical University2014LCYJ005;Bofu-Ipsen Diarrhea FoundationIDF-2007-04