1. Department of Gastroenterology, The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
2. Department of Cerebral Surgery, The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
3. Medical Oncology, The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
4. Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, Heilongjiang, China
5. The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
6. Department of Nursing Care, The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China