TY JOUR TI Critical Issues Providing Radiation Safety at Radiation Accidents: Radiobiological, Medical Radiation and Organizational Providing Countermeasures against the Accident at the Chernobyl Nuclear Power Plant KW radiation accident KW acute radiation disease KW combined radiation damage KW acute radiation disease treatment KW radioprotector KW iodine prophylaxis KW organization of events KW regulatory guideline KW accident at the Chernobyl NPP JO Medical Radiology and radiation safety AU Rozhdestvenskiy, L.M. PY 2018 IS 62 PB Federal Medical Biological Agency of Russia