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After meeting with George Liu , an entrepreneur from Hong Kong who had partnered with Xu to market the treatment , Gaynor and Dr. Anthony Barbara of the Hackensack Medical Center Burn Unit traveled to China to view patients with severe burns and life-threatening infections .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None