28914
Areas covered : In this descriptive review , the long - term safety of calcitonin , selective estrogen receptor modulators ( SERMs ) , bisphosphonates , denosumab and strontium ranelate was reviewed based on randomized controlled trials of 3 years or longer supplemented by extension study data and data from large , observational studies .
 Chemical: estrogen; Chemical: bisphosphonates; Chemical: strontium ranelate
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: estrogen, bisphosphonates, strontium ranelate 
Answer:
 Chemical: estrogen; Chemical: bisphosphonates; Chemical: strontium ranelate