title: [On the problems of sleep].
mesh_terms: D001921:Brain / Q000502:physiology; D006801:Humans; D006993:Hypnotics and Sedatives / Q000627:therapeutic use; D010507:Periodicity; D012890:Sleep; D007319:Sleep Initiation and Maintenance Disorders / Q000188:drug therapy; D012894:Sleep Stages; D012893:Sleep Wake Disorders / Q000175:diagnosis; D012895:Sleep, REM
chemical_list: D006993:Hypnotics and Sedatives
vernacular_title: Zur Problematik des Schlafes.