1. Department of Critical Care Medicine The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital Jinan China
2. Department of Nursing The First Affiliated Hospital of Shandong First Medical. University & Shandong Provincial Qianfoshan Hospital Jinan China
3. School of Nursing Shandong First Medical University & Shandong Academy of Medical Sciences Jinan China