The Chernobyl disaster of 1986 is among the largest technogenic catastrophes in the history of humankind. The vast territories of Ukraine, Republic of Belarus, Russian Federation as well as bordering European states have been exposed to the contamination by the long-lived radionuclides released from the destroyed nuclear power station. The medical consequences of the Chernobyl catastrophe are being studied for more than three decades. In fact, the increased risk of certain forms of leukemia is among the major stochastic effects of radiation exposure. Nevertheless, the final unambiguous...