TY JOUR TI On the Categorization of Radiological Terrorism Threats KW radiological terrorism KW threat categorization KW health impact KW “dirty bomb” KW radiation related injures KW radioactive contamination JO Medical Radiology and radiation safety AU Grachev, M.I. AU Salenko, Y.A. AU Frolov, G.P. AU Moroz, B.B. PY 2019 IS 64 PB Federal Medical Biological Agency of Russia