title: [Guidelines have no effect on the amount of sickness certification].
authors.forename: Dag
authors.initials: D
authors.lastname: Brekke
mesh_terms: D001291:Attitude of Health Personnel; D002568:Certification; D006801:Humans; D009664:Norway; D017410:Practice Guidelines as Topic; D010818:Practice Patterns, Physicians'; D018582:Sick Leave / Q000706:statistics & numerical data*; D013548:Sweden; D014938:Work Capacity Evaluation