1. Laying down basic safety standards for protection against the dangers arising from exposure to ionising radiation, and repealing Directives 89/618/Euratom, 90/641/Euratom, 96/29/Euratom, 97/43/Euratom and 2003/122/Euratom (2014). vol 59. Council Regulation (EC). https://eurlex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2014:013:0001:0073:EN:PDF. Accesed 1 Nov 2020
2. The Ionising Radiation (Medical Exposure) Regulations (2017). UK Government. https://www.legislation.gov.uk/uksi/2017/1322/contents/made. Accessed 1 Nov 2020
3. Health Education England (2020) Radiation protection for cardiology. e-learning for healthcare (e-LfH). https://www.e-lfh.org.uk/programmes/radiation-protection-for-cardiology/. Accessed 1 Nov 2020
4. Tunçer N, Kuyucu E, Sayar Ş, Polat G, Erdil İ, Tuncay İ (2017) Orthopedic surgeons’ knowledge regarding risk of radiation exposition: a survey analysis. Sicot j 3:29. https://doi.org/10.1051/sicotj/2017008
5. National Aeronautics and Space Administration (2013). Comparison of wavelength, frequency and energy for the electromagnetic spectrum. https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum1.html. Accessed 1 Nov 2020