1. 2) BOONE J. M. Radiation exposure to angiographers under different fluoroscopic imaging conditions. Radiology. (1991) vol.180, no.3, p.861-865.
2. 9) IIDA HIROJI. el al. Angiographer's Exposure to Radiation under Different Fluoroscopic Imaging Conditions. Japanese Journal of Radiological Technology. Japanese Society of Radiological Technology (JSRT). (2000) vol.56, no.4, p.610-618. http://search.jamas.or.jp/link/ui/2000255858