Examlex
At the implementation level, the supertype and its subtype(s) depicted in the specialization hierarchy maintain a 1:1 relationship.
Medical License
An official permission for a professional to practice medicine, granted after fulfilling education and examination requirements.
Open-Heart Surgery
A type of surgery where the chest is opened and surgery is performed on the heart muscles, valves, arteries, or other parts of the heart.
Pacemaker
An electronic medical device implanted to regulate the heartbeat by delivering electric pulses to stimulate the heart muscles.
C.Walton Lillehei
Known as the "father of open-heart surgery," he was an American surgeon who played a major role in the development of heart surgery techniques.
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