title: Locums make up a fifth of doctors in emergency units at weekends.
authors: Adrian
authors: A
authors: O'Dowd
mesh_terms: D004636:Emergency Service, Hospital; D004739:England; D006801:Humans; D010561:Personnel Staffing and Scheduling / Q000706:statistics & numerical data; D010820:Physicians / Q000600:supply & distribution*; D013997:Time Factors; D000078329:Workforce