共 50 条
[4]
Stress level and sleep quality of nurses during the COVID-19 pandemic
[J].
WORK-A JOURNAL OF PREVENTION ASSESSMENT & REHABILITATION,
2021, 70 (04)
:1021-1029
[6]
Bollen KA., 2013, Handbook of Causal Analysis for Social Research, P301, DOI [DOI 10.1007/978-94-007-6094-315, 10.1007/978-94-007-6094-3_15]