1. Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052 Henan, China
2. Department of Clinical Laboratory, Henan No. 3 Provincial People’s Hospital, Zhengzhou, 450052 Henan, China
3. Department of Cardiology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052 Henan, China