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We studied mutations in the GALNS gene from 23 additional MPS IVA patients ( 15 from Australia , 8 from Northern Ireland ) , with various clinical phenotypes ( severe , 16 cases ; intermediate , 4 cases ; mild , 3 cases ) .
 Disease: MPS IVA
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: MPS IVA