Ünlü, Serkan Upadhaya, Sunil, Department of Internal Medicine, Hurley Medical Center/Michigan State University, One Hurley Plaza, Flint, MI, United States Ural, Dilek, Kocaeli University, Department of Cardiology, Kocaeli Urban, Szymon Urbancsek, Reka Urbańczyk, Dagmara Urbaneja-Salas, Alberto Urbanek, Bożena, Department of Electrocardiology, Medical University of Lodz, Lodz, Poland Urbanek, Piotr Urbanek, Piotr, Institute of Cardiology, Arrhythmia Department, Warsaw, Poland Urbanek, Piotr Urbanowicz, Iwona Urbanowicz, Tomasz, Department of Cardiac Surgery and Transplantology, Chair of Cardio-Thoracic Surgery, Poznan University of Medical Sciences, Poznan, Poland Urbanowicz, Tomasz Urbanowicz, Tomasz (Poland) Urbańska, Ewa Urbien, Rhyan, University of Witten/Herdecke Ureña, Isabel Urena, Marina Uretsky, Seth Uribarri, Aitor Urondo, Ludmila San Vicente Urra, Francisco Garcia Urselli, Rossella Uruski, Paweł