Department of Digestive System, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China;
Central Laboratory, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100050, China;
Department of Digestive System, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China;
Department of Digestive System, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China;
Department of Digestive System, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China;
Department of Laboratory , Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China;
Department of Digestive System, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China;