21. Drug shortages: shortchanging quality and safe patient care Author(s): Cierniak, Kayla H., authorGaunt, Michael J., authorGrissinger, Matthew, author Publication: [Harrisburg, Pa.] : Pennsylvania Patient Safety Authority, March 2019 Subject(s): Prescription Drugs -- supply & distributionMedication Errors -- statistics & numerical dataForecastingMedication Errors -- prevention & controlMedication Errors -- trendsPatient SafetyPrescription Drugs -- administration & dosageQuality of Health CareRisk ManagementHumansPennsylvaniaUnited States