1 Department of Infectious Diseases, Bern University Hospital and University of Bern, Bern, Switzerland.
2 Department of Emergency Medicine, Waehringer Guertel, Vienna, Austria.
3 Department of Cardiovascular Surgery, Bern University Hospital and University of Bern, Freiburgstrasse CH-3010, Bern, Switzerland. Electronic address: thierry.carrel@insel.ch.