Authors: Beata Sredniawa; Sylwia Cebula; Jacek Kowalczyk; Velislav N Batchvarov; Agata Musialik-Lydka; Anna Sliwinska; Aleksandra Wozniak; Michal Zakliczynski; Marian Zembala; Zbigniew Kalarus Journal: Ann Noninvasive Electrocardiol Date: 2010-07 Impact factor: 1.468