RT Journal Article SR Electronic T1 X-rays, radiation, radioisotopes and radiation therapy JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1390 OP 1390 VO 159 IS 11 A1 A. R. Coppes-Zantinga A1 M. J. Coppes YR 1998 UL http://www.cmaj.ca/content/159/11/1390.abstract AB