Text and Data Mining valid from 2019-11-29
Received: 21 January 2019
Accepted: 30 October 2019
First Online: 29 November 2019
Ethics approval and consent to participate
: Approval for the use of anonymised data in this study (SAIL project number 0463), provisioned within the Secure Anonymised Information Linkage (SAIL) Databank, was granted by an independent Information Governance Review Panel (IGRP) with membership comprising senior representatives from the British Medical Association (BMA), the national Research Ethics Service (NRES), Public Health Wales and NHS Wales Informatics Service (NWIS). The use of anonymised data for research is outside the scope of the EU General Data Protection Regulations (GDPR) and the UK Data Protection Act.
: Not applicable.
: The authors declare that they have no competing interests.