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Our results suggest a causal role of tamoxifen in endometrial cancer , particularly when used as currently proposed for breast cancer prevention .
 Chemical: tamoxifen; Disease: endometrial cancer; Disease: breast cancer
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: tamoxifen; Disease: endometrial cancer; Disease: breast cancer