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#Hartmuth Bittner Website : http://gccsiinc.com/surgeon/dr-bittner/ Dr. Hartmuth Bittner is one of the top heart surgeons in the United States. He received his degree in medicine from the University of Heidelberg Medical School, which is located in Germany. Following medical school, Dr. Hartmuth Bittner completed his residency and fellowship in transplantation and cardiothoracic surgery at Duke