[Ecological zones of Dagestan territory and epidemiology od acute leukemia in older age groups]. / Ekologicheskoe zonirovanie territorii Dagestana i épidemiologiia ostrykh leikozov v starshikh vozrastnykh gruppakh.

The authors report annual acute leukemia incidence through 1980 to 1995 in Dagestan in respect of implications of of environmental factors. The highest leukemia incidence rate was in the age group over 50 years. Acute leukemia incidence varied with years, sex and territory zones. Active utilization of chemical fertilizers in agriculture proved a contributing factor in the onset of acute leukemia, especially in persons older than 50 years.