Assertion: nitrous oxide's effect | /r/HasProperty | studied
Facets:
value: less intensely
type: DEGREE
Source sentences:
text: The effect of occupational exposure on the peripheral nervous system has been studied less intensely, but a questionnaire study (with the previously discussed limitations) of 60,000 dentists and their assistants showed that high exposure (greater than 6 h a week for 10 yr) was associated with neurologic symptoms such as tingling, numbness, and weakness (1.5% vs. control rate of 0.4%).