title: The necessity of guidelines for any workday or four weeks systems for allocating OR times.
authors.affiliation: Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Seung Z
authors.initials: SZ
authors.lastname: Yoon
mesh_terms: D001071:Appointments and Schedules; D017408:Guidelines as Topic; D009873:Operating Rooms / Q000458:organization & administration*; D010561:Personnel Staffing and Scheduling; D040841:Resource Allocation