*Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
†Department of Medicine, University of Minnesota, Minneapolis, MN
‡Division of Cardiothoracic Surgery, Department of Surgery, University of Minnesota, Minneapolis, MN.
Reprints: Andrew W. Shaffer, MD, Division of Cardiothoracic Surgery, University of Minnesota, 420 Delaware Street SE, MMC 207, Minneapolis, MN 55455. E-mail: email@example.com.
The authors report no conflicts of interest.