Raček, Ľubomír, Institute of Animal Physiology, Slovak Academy of Sciences, Košice, Slovak Republic Racheniuk, Henryk Radej, S Radej, Sebastian Radej, Sebastian, Department of Human Anatomy Medical University of Lublin (Poland) Radek, Andrzej Radek, Maciej Radowicki, Stanisław Radwan, Michal Radziejewska, Iwona, PhD Department of Medical Chemistry, Medical University of Bialystok Radzimirska, Malgorzata, Department of Nature Conservation and Plant Physiology, Institute of Biology, Jan Kochanowski University in Kielce, Poland Radzimirska, Malgorzata Radzimirska, Małgorzata Radziszewski, Andrzej Radziwon, Piotr Rafińska, Ludmiła Rago, V Rahimi, Hossein Rahnama, Mansur, Department of Oral Surgery, Medical University of Lublin, Lublin, Poland Raica, Marius Rajewski, Marcin Rajpert-De Meyts, Ewa, Department of Growth and Reproduction, Copenhagen University Hospital (Rigshospitalet), Copenhagen, Denmark Rajpert-Kędzia, Helena, Pathological Laboratory, Gynaecology and Obstetrics Hospital Poznan University of Medical Sciences, Poznan Rajpert-Kędzia, Helena, Department of Pathomorphology, Gynecology and Obstetrics Clinical Hospital, Karol Marcinkowski University of Medical Sciences, Poznan Ramadan, Wafaa S.