1. Department of Cardiac Surgery, The General Hospital of Northern Theater Command, Shenyang, Liaoning 110000, China
2. Department of Nursing, Xinqiao Hospital, Chongqing 400037, China
3. Department of Critical Care Medicine, The General Hospital of Northern Theater Command, Shenyang, Liaoning 110000, China
4. Department of Neurology, Central Hospital of Baoji, Baoji, Shaanxi 721000, China
5. Department of Neurology, The General Hospital of Northern Theater Command, Shenyang, Liaoning 110016, China