Open Access Macedonian Journal of Medical Sciences; Vol. 4 No. 2 (2016): Jun 15 (OAMJMS); 259-263 Open Access Macedonian Journal of Medical Sciences; Vol 4, No 2 (2016): Jun 15 (OAMJMS); 259-263 Open Access Macedonian Journal of Medical Sciences, Vol 4, Iss 2, Pp 259-263 (2016) Open Access Macedonian Journal of Medical Sciences