523
Severe clinical expression in X - linked Emery - Dreifuss muscular dystrophy .
 X - linked Emery - Dreifuss muscular dystrophy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 X - linked Emery - Dreifuss muscular dystrophy