| Institution: | 1. Department of General Division, Hongqi Affiliated Hospital of Mudanjiang Medical University, Mudanjiang, China;2. Department of Ultrasound, The First People’s Hospital of Mudanjiang, Mudanjiang, China;3. Department of Radiology, Hongqi Affiliated Hospital of Mudanjiang Medical University, Mudanjiang, China;4. Department of Cardiac Intensive Care Unit, Hongqi Affiliated Hospital of Mudanjiang Medical University, Mudanjiang, China;5. Department of Prevention Medicine, College of Public Health, Mudanjiang Medical University, Mudanjiang, China |
