title: Erratum to: Early postoperative mortality after simultaneous or staged bilateral primary total hip arthroplasty: an observational register study from the Swedish Hip Arthroplasty Register.
authors.affiliation: Department of Orthopaedics, Visby Hospital, Visby, Sweden. anne.garland@gotland.se.|Swedish Hip Arthroplasty Register, Gothenburg, Sweden. anne.garland@gotland.se.|Department of Orthopaedics, Institute of Surgical Sciences, Uppsala University Hospital, Uppsala, Sweden. anne.garland@gotland.se.
authors.forename: Anne
authors.initials: A
authors.lastname: Garland
authors.affiliation: Swedish Hip Arthroplasty Register, Gothenburg, Sweden. ola.rolfson@vgregion.se.|Department of Orthopaedics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. ola.rolfson@vgregion.se.|Harris Orthopaedic Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, USA. ola.rolfson@vgregion.se.
authors.forename: Ola
authors.initials: O
authors.lastname: Rolfson
authors.affiliation: Swedish Hip Arthroplasty Register, Gothenburg, Sweden. goran.garellick@registercentrum.se.|Department of Orthopaedics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. goran.garellick@registercentrum.se.
authors.forename: Göran
authors.initials: G
authors.lastname: Garellick
authors.affiliation: Swedish Hip Arthroplasty Register, Gothenburg, Sweden. johan.karrholm@vgregion.se.|Department of Orthopaedics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. johan.karrholm@vgregion.se.
authors.forename: Johan
authors.initials: J
authors.lastname: Kärrholm
authors.affiliation: Swedish Hip Arthroplasty Register, Gothenburg, Sweden. nils.hailer@surgsci.uu.se.|Department of Orthopaedics, Institute of Surgical Sciences, Uppsala University Hospital, Uppsala, Sweden. nils.hailer@surgsci.uu.se.
authors.forename: Nils P
authors.initials: NP
authors.lastname: Hailer