Dr Gebeyehu Tessema Azibte -Addis Ababa University, college of medicine and health sciences, department of internal medicineEmail -gebe10tessema@gmail.comDr Zekarias Seifu Ayalew –Addis Ababa University, college of medicine and health sciences, department of internal medicineEmail -zekariasseifu123@gmail.comDr Getnet Yigzaw Mossie- Addis Ababa University, college of medicine and health sciences, department of internal medicineEmail - yig2008gondar@gmail.com