Hazard-related incidents/exposures factors

Post incident, through investigation of hazards-related incidents and exposures to determine and eliminate or control their causal factors... 

Hazards-related incidents or exposures, even the ordinary and frequent, are complex and may have multiple and interacting causal factors. 

The techniques used to evaluate the possible hazards of chemical exposure in humans fall within the term epidemiology , which involves observing human populations and collecting data about the incidence of disease in the population. This is then related to common factors in the population. 

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