Received: 16 August 2018
Accepted: 23 October 2019
First Online: 12 December 2019
Change Date: 7 February 2020
Change Type: Correction
Change Details: In the original publication of this article , the author should be only the collaboration group “STARSurg Collaborative”.
Ethics approval and consent to participate
: Ethics approval was sought from the South-East Scotland Research Ethics Service. Since OAKS was an audit limited to data obtained as part of usual care, NHS ethical review was not required. Patient consent for this study was not applicable.
: Not applicable.
: The authors declare that they have no competing interests.