1 Minneapolis Heart Institute Foundation, Abbott Northwestern Hospital, Minneapolis, Minnesota; Second Department of Cardiology, Attikon University Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece. Electronic address: iosifxeno@hotmail.com.
2 Minneapolis Heart Institute Foundation, Abbott Northwestern Hospital, Minneapolis, Minnesota; Department of Internal Medicine, Yale New Haven Hospital, New Haven, Connecticut.
3 Minneapolis Heart Institute Foundation, Abbott Northwestern Hospital, Minneapolis, Minnesota.
4 Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy; Cardiovascular Center Aalst, Aalst, Belgium; Powerful Medical, Bratislava, Slovakia.