2787
We report carrier identification and a prenatal diagnosis using DNA polymorphisms in 2 families with X - linked Pelizaeus - Merzbacher disease ( PMD ) .
 Disease: X - linked Pelizaeus - Merzbacher disease; Disease: PMD
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
 Entities: X - linked Pelizaeus - Merzbacher disease, PMD 
Answer:
 Disease: X - linked Pelizaeus - Merzbacher disease; Disease: PMD