Khonsari's cardiac surgery safeguards and pitfalls in operative technique / Abbas Ardehali, MD, Professor of Surgery and Medicine, Division of Cardiothoracic Surgery, William E. Connor Endowed Chair in Cardiothoracic Transplantation, Director, UCLA Heart, Lung, and Heart-Lung Transplant Programs, David Geffen School of Medicine at UCLA, Los Angeles, California, Jonathan M. Chen, MD, Professor of Surgerey, Sam and Althea Stroum Endowed Chair in Pediatric Cardiovascular Surgery, Chief of Congenital Cardiac Surgery, Seattle Children's Hospital, University of Washington School of Medicine, Seattle, Washington ; illustrators, Timothy C. Hengst, CMI, FAMI, BodyScientific International, LLC.