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After further adjustment for potential confounders , the odds ratio in women who reported using cocaine and / or amphetamine was 7 . 0 ( 95 % confidence interval = 2 . 8 - 17 . 9 ) .
 Chemical: cocaine; Chemical: amphetamine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: cocaine; Chemical: amphetamine