[1] Med Univ Graz, Graz, Austria
[2] Emory Univ Hosp, Atlanta, GA 30322 USA
[3] Univ Athens, Athens, Greece
[4] Natl Univ Heart Ctr, Singapore, Singapore
[5] ANMCO Fdn Your Heart, Florence, Italy
[6] Mil Hosp Wroclaw, Wroclaw, Poland
[7] Northwestern Univ, Chicago, IL 60611 USA
[8] Brigham & Womens Hosp, Boston, MA 02115 USA
[9] Bayer Pharma AG, Wuppertal, Germany