Open Access Macedonian Journal of Medical Sciences Open Access Macedonian Journal of Medical Sciences; Vol 5, No 5 (2017): Aug 15 (OAMJMS); 677-680 Open Access Macedonian Journal of Medical Sciences; Vol 5 No 5 (2017): Aug 15 (OAMJMS); 677-680 Open Access Macedonian Journal of Medical Sciences, Vol 5, Iss 5, Pp 677-680 (2017)