Krazinski, Bartlomiej E., Department of Human Histology and Embryology, Faculty of Medical Sciences, University of Warmia and Mazury in Olsztyn, Poland Krazinski, Bartlomiej E. Krecicki, Tomasz Krela-Kazmierczak, Iwona, Poznań University of Medical Sciences Krela-Kazmierczak, Iwona, Department of Gastroenterology, Human Nutrition and Internal Diseases, Poznan University of Medical Sciences, Heliodor Swiecicki Hospital, Poznan, Poland Krętowska, Małgorzata Kretowski, Adam Krętowski, Adam, Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok Krętowski, Rafał, Department of Pharmaceutical Biochemistry, Medical University of Bialystok Król, Robert Król, Wojciech Krolicka, Anna Kruk, Barbara Krupiński, Mariusz Kruse, Roland, Department of Dermatology, Heinrich-Heine-University Duesseldorf, Germany Kruszewski, Wiesław, Department of Surgical Oncology, Medical University, Gdańsk, Poland Kryczek, Ilona Krzeski, Antoni, Department of Otolaryngology, Faculty of Medicine and Dentistry, Medical University of Warsaw, Poland Krzyczkowska-Sendrakowska, Magdalena Krzysiek, Józef Krzysztofowicz, Ewa Ku, Sae Kwang Kuai, Xin-Yu Kuang, Xiufeng Kubecova, Martina, Department of Radiotherapy and Oncology, FNKV and Charles University in Prague, Third Faculty of Medicine, Ruská 87,100 00 Prague 10, Czech Republic