HerzZentrum Hirslanden Zurich Clinic of Cardiac Surgery, Zurich, Switzerland; Address for correspondence: Dr Maurizio Taramasso, Heart Center Hirslanden Zurich, Witellikerstrasse 36, CH-8008 Zurich, Switzerland.
Ana Paula Tagliari, MD, PhD
Cardiac Surgery Department, Hospital Mãe de Deus, Porto Alegre, Brazil; Cardiac Surgery Department, Hospital São Lucas da Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
David L. Fischman, MD
Cardiology Department. Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA