title: Erratum to: PREVENTT: preoperative intravenous iron to treat anaemia in major surgery: study protocol for a randomised controlled trial.
authors.affiliation: Division of Surgery and Interventional Science, University College London, London, UK.
authors.forename: Toby
authors.initials: T
authors.lastname: Richards
authors.affiliation: Division of Surgery and Interventional Science, University College London, London, UK. b.clevenger@nhs.net.|Division of Surgery and Interventional Science, 4th Floor, University College London, UCL Medical School Building, 21 University Street, London, WC1E 6AU, UK. b.clevenger@nhs.net.
authors.forename: Ben
authors.initials: B
authors.lastname: Clevenger
authors.affiliation: Queen Elizabeth Hospital, King's Lynn NHS Trust, Suffolk, UK.
authors.forename: Jane
authors.initials: J
authors.lastname: Keidan
authors.affiliation: Department of Medical Statistics, London School of Hygiene and Tropical Medicine, London, UK.
authors.forename: Tim
authors.initials: T
authors.lastname: Collier
authors.affiliation: Department of Anaesthesia and Intensive Care, Papworth Hospital, Cambridge, UK.
authors.forename: Andrew A
authors.initials: AA
authors.lastname: Klein
authors.affiliation: Department of Innovative Clinical Trials, University Medical Centre Göttingen (UMG), Göttingen, Germany.
authors.forename: Stefan D
authors.initials: SD
authors.lastname: Anker
authors.affiliation: Division of Surgery and Interventional Science, University College London, London, UK.
authors.forename: John D
authors.initials: JD
authors.lastname: Kelly