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Wolf-Dieter Heiss ( born December 31 , 1939 ) is an Austrian neuroscientist , Director of the Department of Neurology , University of Cologne and of Department of General Neurology at the Max-Planck-Institute for Neurlogical Research , Cologne ( Germany ) .
 Wolf-Dieter Heiss, Cologne, Max-Planck-Institute, Cologne, Germany
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
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Answer:
 Wolf-Dieter Heiss, Cologne, Max-Planck-Institute, Cologne, Germany