The International Agency for Research on Cancer’s Kurt Straif reviews various studies and notes the problems of obtaining accurate exposure data. The most stringent application of data requirements led the World Health Organisation to provide estimates for just three occupational cancers – lung cancer, mesothelioma and leukaemia. Selected carcinogens accounted for 9 per cent of global lung cancer deaths.

Kurt Straif. The burden of occupational cancer, Occupational and Environmental Medicine volume 65, pages 787-788, 2008.