Assertion: melatonin's effect | /r/HasProperty | direct
Facets:
Source sentences:
text: Studies have indicated that melatonin exerts a direct effect on tumor growth and proliferation, and the increased risk of cancer was observed in patients with the brightest bedrooms.
text: Studies have indicated that melatonin exerts a direct effect on tumor growth and proliferation, and the increased risk of cancer was observed in patients with the brightest bedrooms.