Effects of nighttime naps on sleep patterns of shiftworkers.
D000328:Adult; D002940:Circadian Rhythm; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D009726:Nurses; D012637:Security Measures; D012890:Sleep / Q000502:physiology*; D014937:Work; D014940:Work Schedule Tolerance