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Karl Birnbaum ( August 20 , 1878 , Schweidnitz / Świdnica – March 31 , 1950 , Philadelphia ) was a German-American psychiatrist and neurologist .
 Karl Birnbaum, Świdnica, Philadelphia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
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Answer:
 Karl Birnbaum, Świdnica, Philadelphia