1. Department of Anesthetic Surgery, Baotou Steel Hospital, Baotou, China
2. Department of Cardiology, Baotou Steel Hospital, Baotou, China
3. Laser Treatment Center, Baotou Steel Hospital, Baotou, China
4. Department of Intensive Medicine, Baotou Steel Hospital, Baotou, China
5. Department of Geriatrics, The Second People’s Hospital of Lianyungang, Lianyungang, Jiangsu, China
6. Nursing Department, The Second People’s Hospital of Lianyungang, Lianyungang, Jiangsu, China