Open Access Macedonian Journal of Medical Sciences Open Access Macedonian Journal of Medical Sciences; Vol 6, No 6 (2018): Jun 20 (OAMJMS); 1081-1084 Open Access Macedonian Journal of Medical Sciences, Vol 6, Iss 6, Pp 1081-1084 (2018) Open Access Macedonian Journal of Medical Sciences; Vol 6 No 6 (2018): Jun 20 (OAMJMS); 1081-1084