1United Nations Scientific
Committee on the Effects of Atomic Bomb Radiation.
Annex E: Medical radiation exposures. In Sources
and Effects of Ionizing Radiation. New York, United
Nations, 1993. p 249(国際連合原子放射線影響科学委員会 補遺E:医用放射線被曝線源および電離放射線の影響)
2US National Council on Radiation
Protection and Measurements: NCRP Report No. 93.
Bethesda, Maryland, USA, NCRP, 1987. pp 53-55 (米国放射線防護・測定審議会NCRP報告書第93報)