HospitalistsEmergency Service, HospitalHospital MedicineEmergenciesEmergency Medical ServicesInstitutional PracticeEmergency MedicineHospital-Physician RelationsEmergency TreatmentAcademic Medical CentersOperating RoomsPediatricsEmergency Services, PsychiatricHospitals, CommunityLength of StayCareer MobilityEmergency NursingEfficiencyInternal MedicinePatient CareHospitalizationProfessional AutonomyUnited StatesPatient DischargePatient ReadmissionHospital CostsRetrospective StudiesQuality of Health CareMentorsHospitals, TeachingTriageWounds and InjuriesBronchiolitisHospitalsChest PainData CollectionMedicareInternship and ResidencyPatient AdmissionPhysician's RolePhysicians, FamilyOutcome Assessment (Health Care)WorkloadHealth Services Research