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Twelve aniridia patients , five with a family history and seven presumed to be sporadic , were exhaustively screened in order to test what proportion of people with aniridia , uncomplicated by associated anomalies , carry mutations in the human PAX6 gene .
 Disease: aniridia; Disease: aniridia
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: aniridia; Disease: aniridia