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Following a postdoctoral stay at the University of Wisconsin–Madison , he was a research scientist at Bell Labs , New Jersey for six years .
 University of Wisconsin–Madison, Bell Labs, New Jersey
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 Wisconsin–Madison, Bell Labs, New Jersey