1 Department of Cardiovascular and Thoracic Surgery, University of Texas McGovern School of Medicine, Houston, Tex.
2 Department of Cardiac Surgery, Thomas Jefferson University, Philadelphia, Pa.
3 Department of Cardiac Surgery at Huntington Health, Cedars-Sinai Medical Center, Pasadena, Calif.
4 Department of Cardiac Surgery, University of Michigan Medical School, Ann Arbor, Mich.
5 Division of Pediatric Cardiac Surgery, Department of Cardiac Surgery, Johns Hopkins University School of Medicine, St Petersburg, Fla.
6 Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, Charleston, SC. Electronic address: robert.m.sade@gmail.com.