title: The two faces of Janus.
authors.forename: R
authors.initials: R
authors.lastname: Mahler
mesh_terms: D001291:Attitude of Health Personnel; D003191:Comprehensive Health Care / Q000458:organization & administration*; D006801:Humans; D010820:Physicians / Q000523:psychology*; D017410:Practice Guidelines as Topic; D013222:State Medicine / Q000458:organization & administration*; D006113:United Kingdom