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Erin K. O'Shea Ph.D. is the Vice President and Chief Scientific Officer of the Howard Hughes Medical Institute ( HHMI ) and a Professor of Molecular and Cellular Biology and Chemistry and Chemical Biology at Harvard University .
 Howard Hughes Medical Institute, Harvard University
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Howard Hughes Medical Institute, Harvard University