1. Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
2. Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
3. Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
4. Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
5. Department of Cadre’s Ward, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China