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In men , we observed the independent effects of lack of coffee consumption ( never vs . ever ) , head trauma , and pesticide use , and a suggestive synergistic interaction between immunologic diseases and family history of dementia .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None