Assertion: elf's use | /r/CapableOf | increase the risk of brain tumours
Facets:
value: by up to 470%
type: OTHER
value: after ≥10 years of use
type: TEMPORAL
Source sentences:
text: Studies have shown that using cordless phones, which produce RF-EMFs, can increase the risk of brain tumours by up to 470% after ≥10 years of use when habitually used on one side of the head.