1. School of Medicine, Kunming University, Kunming, China
2. Community Nursing Research Team of Kunming University, Kunming, China
3. Department of Emergency, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
4. Department of Emergency, The First People’s Hospital of Yunnan Province, Kunming, China
5. Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
6. The First People’s Hospital of Kunming, Kunming, China
7. Campus Hospital, Kunming University, Kunming, China