Hospitals, TeachingPatient AdmissionCell DeathCause of DeathHospitalizationHospitals, UniversityHospitals, GeneralRetrospective StudiesHospital CostsLength of StayHospitals, UrbanEmergency Service, HospitalDeathHospitals, PediatricNursing Staff, HospitalTeaching MaterialsHospital Bed CapacityHospitals, DistrictProspective StudiesEconomics, HospitalHospitals, SpecialHospitals, PsychiatricTime FactorsHospitals, PrivateEducation, Medical, UndergraduatePatient DischargeRisk FactorsHospital DepartmentsHospital ChargesHospital UnitsIntensive Care UnitsEnglandFinancial Management, HospitalUnited StatesInfant, NewbornPatient ReadmissionHospital RecordsTeaching RoundsHospital PlanningEducation, MedicalHospital Bed Capacity, 500 and overInpatientsSurgery Department, HospitalCohort StudiesFollow-Up StudiesEmergenciesCross InfectionBed OccupancyAcute DiseaseClinical CompetenceDiagnosis-Related GroupsNigeriaQuestionnairesEducational MeasurementDeath, Sudden, CardiacOutpatient Clinics, HospitalAge FactorsHospitals, CountyIncidence