Katarzyński, Sławomir Katerenchuk, Oleksandr I. Katinas, Katarzyna Katkat, Fahrettin, Department of Cardiology, Lüleburgaz Hospital Katra, Barbara Katritsis, Demosthenes G. Katsimardou, Alexandra Katulska, Katarzyna Katus, Hugo A. Kaufmann, Damian Kaufmann, Damian Kaura, Amit Kautzky-Willer, Alexandra Kautzner, Josef, Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic Kautzner, Josef Kautzner, Josef Kavvouras, Charalampos, Evaggelismos Genaral hospital Kavvouras, Charalampos Kawa, Michał Kawalec, Paweł, Institute of Public Health, Faculty of Health Sciences, Jagiellonian University Collegium Medicum, Krakow, Poland Kawalec, Paweł, Departament of Drug Management, Institute of Public Health, Faculty of Health Sciences, Jagiellonian University Collegium Medicum, Krakow, Poland (Poland) Kawalec, Wanda, The Children’s Memorial Health Institute Kawalec, Wanda, ¹ Department of Pediatric Cardiology, The Children’s Memorial Health Institute, Warsaw, Poland Kawalec, Wanda Kawamoto, Hiroyoshi