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2. Statutory Instruments 2000 No. 1059. The Ionising Radiation (Medical Exposure) Regulations 2000 (London: The Stationery Office) (2000).
3. Hart, D., Hillier, M. C., Wall, B. F., Shrimpton, P. C. and Bungay, D. Doses to patients from medical X-ray examinations in the UK—1995 Review. NRPB-R289 (Chilton: NRPB) (1996).
4. Hart, D., Hillier, M. C. and Wall, B. F. Doses to patients from medical X-ray examinations in the UK—2000 review. NRPB-W14 (Chilton: NRPB) (2002).
5. Dosimetry Working Party of the Institute of Physical Sciences in Medicine. National protocol for patient dose measurements in diagnostic radiology (Chilton: NRPB) (1992).