title: Have you ever had a pain in your back?
authors.forename: B L
authors.initials: BL
authors.lastname: Griffiths
mesh_terms: D001416:Back Pain / Q000453:epidemiology* / Q000209:etiology; D001696:Biomechanical Phenomena; D006801:Humans; D009726:Nurses; D009784:Occupational Diseases / Q000453:epidemiology*