61992
Berwick has studied the management of health care systems , with emphasis on using scientific methods and evidence-based medicine and comparative effectiveness research to improve the tradeoff among quality , safety and costs .
 person: Berwick; organization: health
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Berwick, health 
Answer:
 person: Berwick; organization: health