After Chernobyl.
D000393:Air Pollutants / Q000009:adverse effects*; D000396:Air Pollutants, Radioactive / Q000009:adverse effects*; D005060:Europe; D006801:Humans; D009688:Nuclear Reactors; D014586:USSR
D000393:Air Pollutants; D000396:Air Pollutants, Radioactive