Exposure data in the viscose industry. Achilles'heel of carbon disulphide epidemiology?

A review of 94 papers including 32 mentioned in the TLV documentation, shows that measurement methodology was poorly described in many studies on exposure in the viscose industry. Stationary and personal monitoring of CS2 exposure in two viscose factories showed considerable variations according to site, time and job titles. Possible biases due to inadequate assessement of exposure in the study of dosis-effect relationship by epidemiologic methods is discussed.