Oueslati, Ibtissem Ouleghzal, Hassan Owczarek, Krzysztof Owczarek, Małgorzata Owens, David R. Özdemir, Ayşe Özdemir, Çağla Ozga, Dorota, Department of Emergency Medicine, Faculty of Medicine, University of Rzeszow Ołdak, Monika Ołdziejewska, Maria O’Donnell, Christopher J. O’Neill, M. Colleen O’Reilly, Denis St. J. Paauw, Douglass S. Pabisz, Monika Pachocka, Lucyna Packard, Chris J. Padilla, Eugenia Padrino-Ojea, Sara Padsalge, Mahesh Virayya, Diabecare Speciality Diabetes Centre, Nerul, Navi Mumbai, Maharashtra, India Pakpoor Hajia, Amir Palikhe, Gaurav Palkoci, Blažej Palkoci, Blažej, Surgery Clinic and Transplant Center, University Hospital Martin and Jessenius Faculty of Medicine, Comenius University, Slovak Republic Pańczuk, Anna