Assertion: aflatoxin's effect | /r/HasProperty | demonstrated in only a few studies
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Source sentences:
text: The effects of aflatoxin B1 and Ochratoxin A in causing breast cancer and lung cancer are demonstrated in only a few studies and additional studies need to be conducted in order to confirm the course of action which will help in controlling and reducing the rates of these cancers which are considered as the most common cancers in the world.