1 Unit for Screening Studies in Inherited Cardiovascular Diseases, Cardinal Stefan Wyszynski National Institute of Cardiology, Warszawa, Poland.
2 Molecular Biology Laboratory, Department of Medical Biology, Cardinal Stefan Wyszyński National Institute of Cardiology, Warszawa, Poland.
3 Department of Congenital Heart Diseases, Cardinal Stefan Wyszyński National Institute of Cardiology, Warsaw, Poland.
4 Clinical Research Support Center, Cardinal Stefan Wyszyński National Institute of Cardiology, Warszawa, Poland.
5 1st Department of Arrhythmia, Cardinal Stefan Wyszyński National Institute of Cardiology, Warszawa, Poland.
6 Department of Medical Genetics, Warsaw Medical University, Warszawa, Poland.
7 Unit for Screening Studies in Inherited Cardiovascular Diseases, Cardinal Stefan Wyszynski National Institute of Cardiology, Warszawa, Poland. z.bilinska@ikard.pl.