41297
Toronto , Ontario 1954-1957 Appointed to staff of Department of Public Health , School of Hygiene , University of Toronto 1959 Professor and Head of Department of Epidemiology , University of Toronto , 1962-1975 .
 Toronto , Ontario, Health, Toronto, Toronto
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Toronto , Ontario, Health, Toronto, Toronto