[1] Wroclaw Med Univ, Dept Clin Nursing, Ul Bartla 5, PL-51618 Wroclaw, Poland
[2] Med Univ Lodz, Dept Noninvas Cardiol, Lodz, Poland
[3] Univ Teaching Hosp, Ctr Heart Dis, Wroclaw, Poland
[4] Wroclaw Med Univ, Dept Heart Dis, Wroclaw, Poland
[5] Minist Interior & Adm, Dept Invas Cardiol, Cent Clin Hosp, Warsaw, Poland
[6] Polish Acad Sci, Mossakowski Med Res Ctr, Dept Appl Physiol, Warsaw, Poland
[7] T Marciniak Hosp, Dept Cardiol, Wroclaw, Poland
[8] Novartis Poland Ltd, Dept Cardiol, Warsaw, Poland
[9] Ludwik Rydygier Hosp, Dept Cardiol, Krakow, Poland
[10] Poznan Univ Med Sci, Univ Hosp Lords Transfigurat, Div & Dept Cardiol 1, Poznan, Poland
[11] Silesian Ctr Heart Dis, Dept Cardiol 3, Heart & Vessel Dis Unit, Zabrze, Poland
[12] Jagiellonian Univ, John Paul II Hosp, Dept Coronary Dis & Heart Failure, Inst Cardiol, Krakow, Poland