[1] Guys & St Thomas Natl Hlth Serv Fdn Trust, London, England
[2] Univ Klinikum Rostock, Rostock, Germany
[3] Klinikum Leverkusen, Leverkusen, Germany
[4] Ctr Hosp Univ Sart Tilman, Liege, Belgium
[5] Hosp La Paz, Madrid, Spain
[6] Clin Mediterranea, Naples, Italy
[7] Univ Klinikum Bonn, Bonn, Germany
[8] IRCCS Policlin S Matteo, Pavia, Italy
[9] Univ Szeged, Szeged, Hungary
[10] Segeberger Kliniken GmbH, Herzzentrum, Bad Segeberg, Germany
[11] Boston Sci Corp, Marlborough, MA USA