Said Dr. J. Mark Melhorn, co-editor of a book on occupational disability published by the American Medical Association: "No one has a rate that high — that just doesn't happen".
Siemiatycki et al. have detected some errors in their review of occupational carcinogens published in the November 2004 issue of EHP [ Environ Health Perspect 112 1447 1459 (2004)].
As a result of these methodologic limitations, and despite many occupational cohort studies published in the literature (Table 3), available information on occupational lead exposure and cardiovascular mortality is inadequate to infer the presence or absence of a causal relationship.
The Minnesota Department of Labor and Industry said the temperature and humidity in Mankato and player activities on July 31 did not exceed published occupational health guidelines.
A standardized method, mainly applicable to occupational settings, was published by the German Research Foundation (DFG, 1995b).
In our study, the exposure contrasts between highly and lowly exposed individuals was considerably larger than in previously published occupational cohorts.
Six published occupational studies related ZPP to ALAD polymorphism (Alexander et al. 1998; Kim et al. 2004; Lee SS et al. 2001; Sakai et al. 2000; Schwartz et al. 1995; Wu et al. 2004).
A recent meta-analysis of seven case control studies of adult leukemia and occupational pesticide exposure published during 1990 2005 showed a summary OR of 1.35 (95% CI, 0.91 2.0) (Merhi et al. 2007).
It might be worthwhile doing a systematic review of published occupational intervention studies, noting whether naturally occuring changes have been reported, either anecdotically or in a more systematic way, and, if so, to extract the types and numbers of changes.
Limitations of many of the published occupational studies are that exposures to other solvents occur with benzene exposure, exposure monitoring was inadequate in some cases and the overall low number of study subjects in several of the studies decreased the statistical power of the association (ATSDR, 2007).
