16977
Subgroup analysis was performed by study design , for studies that used validated outcome definitions for AFF , and for studies reporting on duration of bisphosphonate use .
 Chemical: bisphosphonate
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: bisphosphonate