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Department of Surgery, Munson Medical Center, Traverse City, MI, USA; Department of Cardiology, Henry Ford Health System, Detroit, MI, USA; Department of Cardiothoracic Anesthesia and Cardiothoracic Intensive Care Unit, Auckland City Hospital, Grafton, Auckland, New Zealand Correspondence to: Daniel H. Drake, MD. Department of Surgery, Munson Medical Center, 1221 Sixth Street, Suite 202, Traverse City, MI 49684, USA. Email: daniel.h.drake@gmial.com.

Past, current and future management of secondary mitral valve disease: the importance of anatomic staging