article_snippet: This is according to US scientists who have found subtle changes in the Presidentduring
article_snippet: The team used a new algorithm based on a technique used by others to analyse changes in writing by novelists, according to a report in the New York Times. '
article_snippet: There was no significant trend in these features for George H. W. Bush,' the researchers added.
article_snippet: four White House doctors said his four White House doctors saw no evidence of Alzheimer's Disease.