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The adverse effects that appear in rodents have raised concerns about organotins ' potential health risk to humans in relation to organotin exposure .
 Chemical: organotins; Chemical: organotin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: organotins; Chemical: organotin