1. Quarterly update on wrong-site surgery: eleven years of data collection and analysis Author(s): Arnold, Theresa V., author Publication: [Harrisburg, Pa.] : Pennsylvania Patient Safety Authority, September 2015 Subject(s): Medical Errors -- statistics & numerical dataMedical Errors -- trendsSurgical Procedures, OperativeForecastingPatient safetyHumansPennsylvaniaUnited States