Anesthesia Department, HospitalAnesthesia, GeneralAnesthesiaAnesthesia, LocalAnesthesia, EpiduralAnesthesia, SpinalAnesthesia, InhalationAnesthesia, ConductionAnesthesia, IntravenousEmergency Service, HospitalAnesthesia, ObstetricalAnesthesia Recovery PeriodAnesthesia, DentalHospitals, TeachingHospital DepartmentsHospitals, UniversityHospitals, GeneralAnesthetics, IntravenousAnesthetics, InhalationAdjuvants, AnesthesiaHospital CostsPropofolAnesthesiologyHospitals, UrbanRetrospective StudiesAnesthetics, LocalIsofluraneMethyl EthersNursing Staff, HospitalHospitals, PediatricProspective StudiesAnesthetics, Combined