1. Department of Gastroenterology, Yuyao People's Hospital of Zhejiang, Yuyao, Zhejiang 315400, P.R. China
2. Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
3. Department of Neurology, Yuyao People's Hospital of Zhejiang, Yuyao, Zhejiang 315400, P.R. China