1484
Valproic acid induced encephalopathy - - 19 new cases in Germany from 1994 to 2003 - - a side effect associated to VPA - therapy not only in young children .
 Valproic acid, encephalopathy, VPA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Valproic acid, encephalopathy, VPA