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During his tenure at the University of Calcutta , he was a Scientific Associate ( 1983 – 84 ) at CERN , Senior Indo - US Fulbright Fellow ( 1988 – 89 ) at the Lawrence Berkeley Laboratory and Senior Marie Curie Fellow ( 1994 ) at the University of Cambridge .
 University of Calcutta, CERN, Indo, US, University of Cambridge
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 Calcutta, CERN, Indo, US, University of Cambridge