title: Erratum: The Use of Biologic Agents in Athletes with Knee Injuries.
authors.affiliation: Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania.
authors.forename: Michaela
authors.initials: M
authors.lastname: Kopka
authors.affiliation: Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania.
authors.forename: James P
authors.initials: JP
authors.lastname: Bradley