1 Department of Congenital Heart Diseases, National Institute of Cardiology, Warsaw, Poland
2 Clinical Department of Oncology, National Medical Institute of the Ministry of the Interior and Administration, Warsaw, Poland
3 Clinical Department of Anaesthesiology and Intensive Care, National Medical Institute of the Ministry of the Interior and Administration, Warsaw, Poland
4 Clinical Cardiology Centre, National Medical Institute of the Ministry of the Interior and Administration, Warsaw, Poland. piotr.szymanski@cskmswia.gov.pl