Khaledifar, Arsalan, Cardiology Department, School of medicine, Cardiologist, Hajar Hospital, shahrekord University of Medical Sciences. Shahrekord, Iran. Khamse, Safoura Khan, Jaffar Khan, Jamal Nasir Khan-Kheil, Mehtab Mehtab Khand, Aleem Khandalwal, Amit Kharal, Ghulam A. Kharal, Mubashar Khattab, Elina Khedi, Elvin Kheifets, Mark Khokhar, Arif A. Khokhar, Arif A Khoury, Mazen Kianicka, Bohuslav, University Hospital St. Anna and Masaryk University Kicińska, Anna Kiczmer, Pawel Kidawa, Michał, Department of Intensive Cardiac Care, Medical University of Lodz, USK im WAM-CSW, ul. Sterlinga 1/3, Lodz, Poland Kidawa, Michał Kidawa, Michał Kieć-Wilk, Beata Kiecana, Jarosław Kiedrowicz, Radosław, Cardiology Department, Pomeranian Medical University, Szczecin, Poland Kiedrowicz, Radosław, Department of Cardiology, Pomeranian Medical University, Szczecin, Poland (Poland)