1971
Two hundred four people with epilepsy were grouped on the basis of antiepileptic drug therapy ( current , previous , or no exposure to VGB ) .
 Disease: epilepsy; Chemical: VGB
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: epilepsy; Chemical: VGB