Karkos, Christos Karmelita-Katulska, Katarzyna, Department of General Radiology, Poznan University of Medical Sciences Karnafel, Waldemar, Medical University of Warsaw Kaseja, Krzysztof Kasprzak, Aleksander Kaszczewski, Piotr Krzysztof Kaszuba, Marek Katarzyński, Sławomir Kazek, Grzegorz Kazibudzki, Marek Kazimierczak, Arkadiusz Kaźmierczak, Henryk Kazmierski, Piotr A., Department of Vascular, General and Oncological Surgery, Copernicus Memorial Hospital, Lodz, Poland Kałuża, Grzegorz Keczeli, Viola Kędzia, Anna Kędzia, Anna Kesik, Jan J. Kęsik, Jan Kęsik, Jan Jakub Kęsik, Jan Kęsik, Jan Jakub Keturakis, Vytenis, Lithuanian University of Health Sciences, Kaunas Khairy, Hussein Mahmoud Khan, Momin