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Chicago-tyylinen lähdeviittausZhang, Fan, et al. "Epidemic Area Contact History and Sleep Quality Associated With Posttraumatic Stress Symptoms in the First Phase of COVID-19 Outbreak in China." Sci Rep 2020.
MLA-viiteZhang, Fan, et al. "Epidemic Area Contact History and Sleep Quality Associated With Posttraumatic Stress Symptoms in the First Phase of COVID-19 Outbreak in China." Sci Rep 2020.
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