1. ESR iGuide. Clinical Decision Support using European Imaging Referral Guidelines.
https://www.myesr.org/esriguide
(accessed 10.1.18)
2. Remedios D, France B, Alexander M (2017) Making the best value of clinical radiology: iRefer guidelines, 8th edition. Clin Radiol 72(9):705–707.
https://doi.org/10.1016/j.crad.2017.05.009
3. The Royal College of Radiologists (2017) RCR iRefer Guidelines: Making the best use of clinical radiology, 8e. The Royal College of Radiologists, London
https://www.irefer.org.uk/
4. ACR Select. American College of Radiology and the National Decision Support Company.
http://nationaldecisionsupport.com/acrselect/
(accessed 10.1.18)
5. WHO & IAEA. BONN CALL FOR ACTION: 10 Actions to Improve Radiation Protection in Medicine in the Next Decade.
http://www.who.int/ionizing_radiation/medical_exposure/bonncallforaction2014.pdf?ua=1
(accessed 10.1.18)