title: The variations enigma.
authors.affiliation: Royal College of Nursing.
authors.forename: Anna
authors.initials: A
authors.lastname: Crossley
mesh_terms: D003695:Delivery of Health Care / Q000592:standards*; D054625:Healthcare Disparities / Q000592:standards*; D006801:Humans; D017410:Practice Guidelines as Topic / Q000592:standards*; D013222:State Medicine / Q000592:standards*; D006113:United Kingdom