510
Questions remain about the optimal dose of ribavirin and the incidence of RIHA in a real - world population .
 Chemical: ribavirin; Disease: RIHA
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:
 Chemical: ribavirin; Disease: RIHA