RT @NEJM: Implantation of device to narrow the coronary sinus reduced symptoms, improved QOL in patients w/ refractory angina. http://t.co/sXlUGulGTf
RT @NEJM: Implantation of device to narrow the coronary sinus reduced symptoms, improved QOL in patients w/ refractory angina. http://t.co/sXlUGulGTf (via Twitter http://ift.tt/16DsMhX)
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