Hoffman, Piotr, Department of Congenital Heart Diseases, Institute of Car diology Warsaw Hoffman, Piotr, Institute of Cardiology, ul. Alpejska 42, 04-628 Warsaw Hoffman, Piotr, Institute of Cardiology, Congenital Heart Diseases Department, Warsaw, Poland Hoffman, Piotr (Poland) Hoffman, Piotr Hoffman, Tadeusz Sitko i Piotr Hoffmann, Grischa Hoffmann, Michał Hojs, Radovan, University Medical Center Maribor Hojs, Radovan Hojs Fabjan, Tanja, University Medical Center Maribor Holcman, Katarzyna Holcman, Katarzyna Holecki, Michał Holm, Niels Ramsing Holmqvist, Fredrik, Department of Cardiology, Lund University Hospital, SE-221 85 Lund, Sweden Holmström, Alexandra, Gothenburg University Holy, Erik W., Heart Center Bad Segeberg Holy, Erik W. (Switzerland) Holzmann, Martin, Department of Emergency Medicine, Karolinska University Hospital, Huddinge, Stockholm, Sweden; Department of Internal Medicine, Solna, Karolinska Institutet, Stockholm, Sweden Holzmeister, Johannes, Department of Cardiology, University of Zurich Hombach, Vinzenz, Department of Internal Medicine II, Cardiology, Angiology, Pneumology, Sports and Rehabilitation Medicine, University Hospital of Ulm, Germany Hombach, Vinzenz Homorodean, Calin, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca Departament of Interventional Cardiology at Cluj County Emergency Hospital Hong, Jaekyoung A., Department of Internal Medicine, Division of Cardiology, University of Rochester Medical Center, Rochester, NY, USA