Assertion: opium's effect | /r/HasProperty | unclear
Facets:
value: as of 2013
type: TEMPORAL
Source sentences:
text: As of 2013 , the effect of low-dose or acute opioid use on the endocrine system is unclear.
text: As of 2013 , the effect of low-dose or acute use of morphine on the endocrine system is unclear.