These early studies collected information on SHS exposure at home and at the workplace, but not during leisure time, a setting that may be a source of substantial exposure among young people [ 2, 18].
Substantial exposure to airborne particles from indoor sources may correlate with outdoor PM exposure, thus raising the concern of confounding.
We recommend that testing for CAL (and specifically for JCV) infection should be strongly considered in the setting of severe sepsis in adults with substantial exposure to mosquitoes and no other identifiable source of sepsis.
In the general non-smoking population without substantial exposure to occupational hazards and severe pollution, the diet is likely to be the largest source of BaP exposure (i.e., approximately 70 96% of total exposure in non-smokers) (Lioy and Greenberg, 1990; Menzie et al, 1992; Butler et al, 1993).
These indicators are arguably rather crude proxies for emission sources of traffic-related pollutants [ 27] and may result in substantial exposure misclassification, although not necessarily in a way that would differentially affect cases and controls.
For agricultural workers, the source of the OP and time of exposure are typically known, and there is substantial exposure above background, thus allowing an unambiguous estimation of exposure levels (Chen et al. 2013).
The University has substantial exposure to global markets.
He has got substantial exposure to several laboratory developments, academic structure and student welfare.
Such proxies can lead to substantial exposure misclassification.
We show results corresponding to ever exposure and to substantial exposure, as defined above.
