On the basis of the existing literature it is therefore unresolved whether environmental exposure to PFAS may affect human fecundity.
At the same time, however, unresolved weaknesses in exposure assessment methodologies have hindered the success of epidemiologic components of the research programs, because they mean that negative results are insufficient to conclude that no relationship exists.
CRAIG V. VANSANDT Carlisle, Pa., Feb. 22, 2012 Mr. Doron is right that nuclear technology is ready and does not cause global warming, but he is wrong not to mention the problems of unresolved waste storage, earthquakes, exposure to cyber and regular terrorism or the potential concentration of the fuel for military use.
However, the extent to which inbreeding affects the vulnerability of populations to environmental stressors, such as chemical exposure, remains unresolved.
Although extensive research has been conducted on health effects of occupational exposures to asbestos, many issues related to environmental asbestos exposures remain unresolved.
The identification of baseline risk factors to assess a patient's fragility or ability to tolerate treatment is desirable to predict outcome of chemotherapy toxicity, not only for medically unfit patients but also amongst patients with an apparently good medical condition, since the high inter-individual variability in drug exposure remains an unresolved issue.
Read about the unresolved issues surrounding acute versus chronic exposure and the potential for changes in neurobehavioral performance reflecting cognitive and psychomotor dysfunction.
Unresolved issues regarding the relationship of pesticide exposure to symptom prevalence include the relative importance of acute and chronic exposure, of pesticide poisoning or high-exposure events compared with chronic moderate exposure, and of pesticides other than organophosphates.
The reporting of ultrasound findings of uncertain significance can cause unresolved maternal anxiety [ 16] and exposure to the risks associated with invasive diagnostic tests, although new standards for the performance of amniocentesis and chorionic villus sampling in Wales give clear guidance on appropriate indications for these procedures [ 17].
The question of whether the capacity for temperature acclimation of R in this species is an inherent characteristic of mature leaves or is dependent on the temperature exposure during leaf growth remains unresolved.
Major unresolved issues include the relative importance of acute and chronic exposure, the effect of moderate exposure in the absence of poisoning, and the relationship of pesticide-related neurotoxicity to neurodegenerative disease.
