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In March 2011 , researchers at Harvard Medical School announced in " Neurology " that ibuprofen had a neuroprotective effect against the risk of developing Parkinson 's disease .
 organization: Harvard Medical School
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Harvard Medical School