HospitalistsInpatientsHospital MedicineInstitutional PracticeHospital-Physician RelationsAcademic Medical CentersLength of StayCareer MobilityPediatricsHospitals, CommunityInternal MedicinePatient CareEfficiencyHospital CostsPatient DischargeProfessional AutonomyHospitalizationPatient ReadmissionHospitals, TeachingMentorsMedicareUnited StatesQuality of Health CareHospitalsBronchiolitisInternship and ResidencyData CollectionPhysician's RoleGastroenterologyPhysicians, Family