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For his PhD he joined the working group of the Nobel laureate Adolf Windaus at the University of Göttingen and he finished his studies with a PhD in chemistry in 1927 .
 Adolf Windaus, University of Göttingen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Adolf Windaus, University of Göttingen