1. Radiation exposure of the U.K. population—1993 review report 263;National Radiological Protection Board,1993
2. The ionising radiation (protection of persons undergoing medical examination or treatment) regulations 1988, statutory instrument No. 778,1988
3. National protocol for patient dose measurement in diagnostic radiology;IPSM/NRPB/COR,1992
4. Organ doses from medical X-ray examinations calculated using Monte Carlo techniques;Jones,1985