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Sleep Initiation and Maintenance Disorders
Mental Disorders
Depressive Disorder
Prevalence
Cross-Sectional Studies
Comorbidity
Expert Systems
Health Surveys
Risk Factors
Severity of Illness Index
Psychiatric Status Rating Scales
Interviews as Topic
Incidence
Sleep Disorders
Questionnaires
Psychotropic Drugs
Europe
Great Britain
France
Wakefulness
Co-Publications
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10
9
6
4
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