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Abraham Silvers ( born 29 April 1935 in Brooklyn , New York ) is an American mathematician and statistician who has written extensively on research methods and approaches to clinical trials , medical studies and environmental risk assessment .
 Brooklyn , New York
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Brooklyn , New York