title: Zolpidem "as needed" for the treatment of primary insomnia: a double-blind, placebo-controlled study.
authors.affiliation: Sleep Medicine Research Center, St Luke's Hospital, Chesterfield, Missouri 63017, USA. walsjk@stlo.smhs.com
authors.forename: James K
authors.initials: JK
authors.lastname: Walsh
mesh_terms: D000328:Adult; D002908:Chronic Disease; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D006993:Hypnotics and Sedatives / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D011725:Pyridines / Q000627:therapeutic use*; D007319:Sleep Initiation and Maintenance Disorders / Q000188:drug therapy*; D000077334:Zolpidem
chemical_list: D006993:Hypnotics and Sedatives; D011725:Pyridines; D000077334:Zolpidem