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The National Institutes of Health similarly use " Dr. ( surname ) " in salutations for people with an M.D. , Ph.D. or D.D.S. They advise using full name followed by degrees in addressees , explicitly stating not to use the title " Dr. " , although an example in the following paragraph does , in fact , use the title rather than giving degrees .
 National Institutes of Health
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 National Institutes of Health