5021
Abnormalities of chromosome region 15q11 - 13 are associated with Angelman syndrome ( AS ) and Prader - Willi syndrome ( PWS ) .
 Angelman syndrome, AS, Prader - Willi syndrome, PWS
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 Angelman syndrome, AS, Prader - Willi syndrome, PWS