CHRONIC LYMPHOCYTIC LEUKEMIA IN RELATION TO CHEMICAL EXPOSURES

As part of a population-based case-control study carried out in four areas of the United States, 427 cases of chronic lymphocytic leukemia diagnosed between July 1, 1977, and December 31, 1981, and 1,683 controls were interviewed regarding their history of chemical exposure. Increased risks were associated with reported past exposure to acid-containing chemicals, «other caustic substances,» aliphatic hydrocarbons, and chlorinated hydrocarbons