title: Over-the-counter hypnotics and chronic insomnia in the elderly.
authors: L
authors: L
authors: Lasagna
mesh_terms: D000368:Aged; D002908:Chronic Disease; D003937:Diagnosis, Differential; D006801:Humans; D006993:Hypnotics and Sedatives / Q000008:administration & dosage* / Q000009:adverse effects; D004366:Nonprescription Drugs / Q000008:administration & dosage* / Q000009:adverse effects; D007319:Sleep Initiation and Maintenance Disorders / Q000188:drug therapy* / Q000209:etiology; D016896:Treatment Outcome
chemical_list: D006993:Hypnotics and Sedatives; D004366:Nonprescription Drugs