Institution: | Juan Xie, Zhi-Hui Tan, Xia Tang, Yan-Ping Liu, Li Zhang, Guo-Qing Li, Department of Gastroenterology, the Second Affiliated Hospital of University of South China, Hengyang 421001, Hunan Province, ChinaJuan Xie, Ming-Shu Mo, Run-Liang Gan, Yi Li, Department of Diagnostics, Medical College of University of South China, Hengyang 421001, Hunan Province, China |