1. Department of Gastroenterology, The First Hospital of Qiqihar City, Qiqihar, Heilongjiang, China
2. Department of Pharmacy, The First Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China
3. Department of Physiology, Qiqihar Medical University, Qiqihar, Heilongjiang, China
4. Department of Cardiology, Hospital of Traditional Chinese Medicine of Qiqihar, Qiqihar, Heilongjiang, China