1. Cardiothoracic Surgery, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China
2. Endocrinology Department, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China
3. Department of Respiratory and Critical Care Medicine, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China
4. Department of Critical Care Medicine, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China