title: Insomnia etiology and comorbidity.
authors.affiliation: Department of Psychiatry, School of Medicine of the University of California, San Diego, CA, USA.
authors.forename: Milton K
authors.initials: MK
authors.lastname: Erman
mesh_terms: D015897:Comorbidity; D005260:Female; D006801:Humans; D008297:Male; D012307:Risk Factors; D007319:Sleep Initiation and Maintenance Disorders / Q000453:epidemiology / Q000209:etiology*