1. DEPARTMENT OF CARDIOLOGY AND CARDIAC SURGERY, FACULTY OF MEDICAL SCIENCES, UNIVERSITY OF VARMIA AND MAZURY, OLSZTYN, POLAND; DEPARTMENT OF CARDIOLOGY, VOIVODAL SPECIALIST HOSPITAL, OLSZTYN, POLAND
2. DEPARTMENT OF CARDIOLOGY, VOIVODAL SPECIALIST HOSPITAL, OLSZTYN, POLAND
3. DEPARTMENT OF INVASIVE CARDIOLOGY, CENTRE OF POSTGRADUATE MEDICAL EDUCATION, WARSAW, POLAND