More recently, several studies have found that the practice of examining the effects on a single day basis may significantly understate the risk of short-term exposures (Schwartz, 2000; Zanobetti et al, 2002).
Exposure even on a short term basis is dangerous and detrimental to health.
mnli hypothesis: Exposure even on a short term basis is dangerous and detrimental to health. premise: More recently, several studies have found that the practice of examining the effects on a single day basis may significantly understate the risk of short-term exposures (Schwartz, 2000; Zanobetti et al, 2002).