Urbanek, Tomasz, Department of General Surgery and Angiology, Medical University of Silesia Hospital No. 7, Professor Leszek Giec Upper Silesian Medical Centre, Katowice Urbanek, Tomasz, Department of General and Vascular Surgery, Medical University of Silesia, Katowice, Poland Urbaniak, Joanna, Wroclaw Medical University, Poland Urbanik, Andrzej Urbanowicz, Tomasz Urbanowicz, Tomasz Urbanowicz, Tomasz (Poland) Urbańska, Ewa Urbański, Dawid Urbański, Krzysztof Urlik, Maciej Uruski, Paweł, Department of Hypertension, Angiology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland Uruski, Paweł Usal, Ayhan, Çukurova University Faculty of Medicine Usalp, Songül Uslu, Nevzat, Mehmet Akif Ersoy Thorasic and Cardiovascular Surgery Training and Research Hospital Uslu, Nevzat, Department of Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, Istanbul/TURKEY Uslu, Nevzat, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital. Usowicz-Szaryńska, Monika Ustabasıoglu, Fethi Emre, Istanbul Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital Uva, Miguel Sousa Uyarel, Huseyin, Bezmialem Vakif University, School Of Medicine Uyarel, Huseyin Uygur, Begum, Cardiology Department, Istanbul Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey Uygur, Begum