Dr Gebeyehu Tessema Azibte -Addis Ababa University, college of medicine and health sciences, department of internal medicineEmail [email protected] Zekarias Seifu Ayalew –Addis Ababa University, college of medicine and health sciences, department of internal medicineEmail [email protected] Getnet Yigzaw Mossie- Addis Ababa University, college of medicine and health sciences, department of internal medicineEmail - [email protected]