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Deficiency of arylsulfatase A ( ARSA ) enzyme activity causes metachromatic leukodystrophy ( MLD ) .
 Disease: Deficiency of arylsulfatase A; Disease: metachromatic leukodystrophy; Disease: MLD
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: Deficiency of arylsulfatase A; Disease: metachromatic leukodystrophy; Disease: MLD