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In 1902 he received his doctorate from the University of Freiburg , and subsequently worked at the Herzberge asylum in Berlin-Lichtenberg .
 University of Freiburg, Berlin-Lichtenberg
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 University of Freiburg, Berlin-Lichtenberg