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Until October 1994 , he worked as Professor at the University Faculties St Ignatius ( UFSIA ) of the University of Antwerp ( Full-time , 1971 – 1994 ) and at the Katholieke Universiteit Leuven ( Part-time , 1965 – 99 ) .
 University of Antwerp, Katholieke Universiteit Leuven
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
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Answer:
 University of Antwerp, Katholieke Universiteit Leuven