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Association between number of comorbid conditions, depression, and sleep quality using the Pittsburgh Sleep Quality Index: Results from a population-based survey

Quality Of LifeSleep HealthSleep DisordersMental HealthSocial SciencesComorbid ConditionsSleep MedicineComorbid Psychiatric DisorderPublic HealthSleepPsychiatryDepressionInsomniaSleep DisorderPopulation-based SurveyMedicineSleep QualityPsychopathologySleep Psychology