title: Critical mass.
authors.forename: Melanie
authors.initials: M
authors.lastname: Barnes
mesh_terms: D003422:Critical Care / Q000458:organization & administration / Q000639:trends*; D006801:Humans; D009722:Nurse Practitioners / Q000458:organization & administration / Q000600:supply & distribution / Q000639:trends*; D009741:Nursing Staff, Hospital / Q000458:organization & administration / Q000639:trends*; D006113:United Kingdom; D000078329:Workforce