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As the pandemic of type 2 diabetes spreads globally , clinicians face many challenges in treating an increasingly diverse patient population varying in age , comorbidities , and socioeconomic status .
 None
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:  
Answer:
 None