Siek, E. Siemińska, Jolanta Sienkiewicz, J. Sienkiewicz, Waldemar Sienkiewicz, Waldemar, Department of Animal Anatomy, Faculty of Veterinary Medicine, Warmia and Mazury University, Olsztyn, Poland Sierakowska-Urbańska, Grażyna Sierocińska-Sawa, J. Sieroń, Dominik Sierszeń, W. Sikorska, K. Sikorska-Piwowska, Z. M. Sikorski, Andrzej Silawal, S. Silicki, J. Silvestre, P. Simoens, Paul, Department of Morphology, Faculty of Veterinary Medicine, Gehnt University, Belgum Simoens, Paul Simsek, H. Sinan Guvenc, T., Department of Cardiology, Faculty of Medicine, Kafkas University, Kars, Turkey Sindel, Muaffer Sindel, Muzaffer Sindel, Muzaffer, Department of Anatomy, Akdeniz University, Faculty of Medicine, Antalya, Turkey Singh, K. Singh, R. Singh, R., Department of Anatomy, AIIMS, Rishikesh Uttrakhand, India (India)