Medical Order Entry SystemsDrug Therapy, Computer-AssistedMedication Systems, HospitalMedication ErrorsHospital Information SystemsClinical Pharmacy Information SystemsMedical Records Systems, ComputerizedDecision Support Systems, ClinicalUser-Computer InterfaceAttitude to ComputersOrganizational InnovationMedication SystemsRadiology Department, HospitalPharmacy Service, HospitalReminder SystemsDecision Making, Computer-AssistedPatient Care ManagementSystems IntegrationLogical Observation Identifiers Names and CodesHospitals, VeteransSafety ManagementDiffusion of InnovationPhysiciansMedical Staff, HospitalAcademic Medical CentersPhysician's Practice PatternsMedical ErrorsDrug-Related Side Effects and Adverse ReactionsAmbulatory Care Information SystemsElectronic PrescribingComputers, MainframeUnited States Department of Veterans AffairsComputer User TrainingClinical Laboratory Information SystemsTime and Motion Studies