Open Access Macedonian Journal of Medical Sciences, Vol 6, Iss 7, Pp 1187-1192 (2018) Open Access Macedonian Journal of Medical Sciences Open Access Macedonian Journal of Medical Sciences; Vol 6, No 7 (2018): Jul 20 (OAMJMS); 1187-1192 Open Access Macedonian Journal of Medical Sciences; Vol 6 No 7 (2018): Jul 20 (OAMJMS); 1187-1192