administration capital colonoscopy control crossinfection economics endoscopes endoscopy equipmentandsupplies evaluation finance healthfacilitymerger healthservicesadministration hospitalmergers infectioncontrol maintenance maintenanceandrepair management medicalcare medicalerrors medicalinstrumentsandapparatus nosocomialinfections omahavamedicalcenter organization prevention qualitycontrol rulesandpractice safetymanagement safetymeasures sanitation standards sterilization unitedstates veterans veterans'hospitals