1. Prevalence, severity, and nature of preventable patient harm across medical care settings: systematic review and meta-analysis;Panagioti;BMJ.,2019
2. Never Events reported as occurring between 1 April 2017 and 31 March 2018 – final update, NHS Improvement, April 2019.
3. NHS England Patient Safety Domain, March;Serious Incident Framework,2015
4. Provisional publication of Never Events reported as occurring between 1 April and 30 April 2020, NHS Improvement, June 2020.
5. Wrong tooth extraction: further analysis of "never event" data;Pemberton;Br J Oral Maxillofac Surg,2019