title: Erratum to: Using nonparametric conditional approach to integrate quality into efficiency analysis: empirical evidence from cardiology departments.
authors.affiliation: Hamburg Center for Health Economics, Universität Hamburg, Esplanade 36, 20354, Hamburg, Germany. yauheniya.varabyova@uni-hamburg.de.
authors.forename: Yauheniya
authors.initials: Y
authors.lastname: Varabyova
authors.affiliation: Hamburg Center for Health Economics, Universität Hamburg, Esplanade 36, 20354, Hamburg, Germany.|Center for Gerontology and Health Care Research, School of Public Health, Brown University, Providence, RI, USA.
authors.forename: Carl Rudolf
authors.initials: CR
authors.lastname: Blankart
authors.affiliation: Hamburg Center for Health Economics, Universität Hamburg, Esplanade 36, 20354, Hamburg, Germany.
authors.forename: Jonas
authors.initials: J
authors.lastname: Schreyögg