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In our study , we have determined the ATM mutation spectrum in 19 classical A - T patients , including some immigrant populations , as well as 12 of Dutch ethnic origin .
 Disease: A - T
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: A - T