1. Nursing Department, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
2. Department of Nursing, Binzhou Medical College, Yantai, China
3. Department of Nursing, Medical College of Yan’an University, Yan’an, China
4. Nursing Department, Xi’an Fourth Hospital, Xi’an, Shanxi, China
5. Clinical Research Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China