23739
Low allopurinol doses are sufficient to optimize azathioprine therapy in inflammatory bowel disease patients with inadequate thiopurine metabolite concentrations .
 Chemical: allopurinol; Chemical: azathioprine; Chemical: thiopurine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: allopurinol; Chemical: azathioprine; Chemical: thiopurine