title: Less than 24 hour pseudo-periodicity in work schedules of train drivers, in relation to their sleep.
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D005602:France; D006801:Humans; D008297:Male; D009790:Occupations; D010507:Periodicity; D011890:Railroads; D012890:Sleep; D013997:Time Factors