1997
CONCLUSION : Serious hepatotoxicity associated with sulfasalazine appears to be under - appreciated and intensive monitoring and vigilance in the first 6 weeks of treatment is especially important .
 Disease: hepatotoxicity; Chemical: sulfasalazine
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: hepatotoxicity; Chemical: sulfasalazine