title: "Acting" leadership roles: lessons learned.
authors.affiliation: Geisinger Health System, Danville, Pa, USA. RSPAHR@geisinger.edu
authors.forename: Robert
authors.initials: R
authors.lastname: Spahr
mesh_terms: D002322:Career Mobility; D006801:Humans; D007857:Leadership; D010820:Physicians; D024382:Professional Role; D014481:United States