Olszańska, Dorota Olszewska, Ewa, Department of Otolaryngology, Medical University of Bialystok, Poland Olszewski, Waldemar L. Oltulu, Fatih Oluwatosin, Ogedengbe O. Omar, Abeer Ibraheem Omari, Naima, Laboratory of Bioenergetics and Intermediary Metabolism, Department of Biology and Physiology of Organisms FSB, USTHB, BP32, El Alia, Bab-Ezzouar, 16111 Algeria, Algiers. Omidy, Honey Alef Oner, Hakan, Department of Histology and Embryology, Faculty of Veterinary Medicine, Mehmet Akif Ersoy University, Burdur, Turkey Oner, Jale Onkaew, Supatsorn Onyemaechi, Azu O. Oponowicz, Agnieszka, Department of Human Physiology, Faculty of Medical Sciences, University of Warmia and Mazury, Olsztyn, Poland Orlowska-Heitzman, Jolanta Orozco-Barocio, Arturo Orzechowski, Arkadiusz Osamura, R Yoshiyuki Osemlak, Paweł Osiecka-Iwan, Anna Osiecka-Iwan, Anna, Department of Histology and Embryology, Medical University of Warsaw, Warsaw, Poland (Poland) Osiecka-Iwan, Anna Osowski, Stanisław Ossolińska, Maria Ostalska-Nowicka, Danuta, Department of Paediatric Cardiology and Nephrology, Poznan University of Medical Sciences, Poland Ostalska-Nowicka, Danuta