Sleep quality and psychological distress among undergraduate students of a Nigerian university

The Hospital Anxiety and Depression Scale

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A scaled version of the General Health Questionnaire

David Goldberg, V F Hillier · Psychological Medicine · 1979 · 5.5K citations

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Sleep Patterns and Predictors of Disturbed Sleep in a Large Population of College Students

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Psychometric evaluation of the pittsburgh sleep quality index

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Sleep Duration and Health in Young Adults

Andrew Steptoe · Archives of Internal Medicine · 2006 · 430 citations

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