[1] Shandong University,Centre for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine
[2] Shandong University,NHC Key Lab of Health Economics and Policy Research
[3] Cheeloo College of Medicine,School of Nursing and Rehabilitation
[4] Shandong University,undefined
[5] Department of Nursing,undefined
[6] Qilu Hospital,undefined
[7] Cheeloo College of Medicine,undefined
[8] Shandong University,undefined
[9] Johns Hopkins University School of Medicine,undefined