On this day: September 11

POSTED: 10:06 PM Sep 10 2012   UPDATED: 12:00 AM Sep 11 2013

The Beatles record their first single, Pete Rose becomes baseball's all-time hits leader, Kenneth Starr releases his report, and terrorists strike America, all on this day.

OTD September 11 - heart valve
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National Museum of Health and Medicine

1952: The first artificial aortic valve is successfully fitted in the heart of a 30-year-old patient. The valve was made by Dr. Charles A. Hufnagel of the Georgetown University Medical Center in Washington, D.C.

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