1. Department of Gastrointestinal Surveillance, The First Affiliated Hospital of Wenzhou Medical University, Ouhai District, Wenzhou City, Zhejiang, China
2. Department of Gastrointestinal Surveillance, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Lucheng District, Wenzhou, Zhejiang, China
3. The Medical Department, Jiangsu Simcere Diagnostics Co.Ltd, The state Key Laboratory of Neurology and Oncology Drug Development, Nanjing, China