Text and Data Mining valid from 2020-02-07
Received: 16 April 2019
Accepted: 3 February 2020
First Online: 7 February 2020
Ethics approval and consent to participate
: The proposal of this study was ethically approved by the Institutional Review Board (IRB) of Addis Ababa University, College of Health Sciences. Permission was obtained from Medical directors of Tikur anbessa specialized Hospital, Yekatit 12 Hospital and Zewditu Hospital. Written informed consent was obtained from each patient participated in the study. The study participants’ age was > 1 year old. Before starting data collection, the purpose of the study was explained to all study participants and written informed consent was obtained. For age group 1–16 years old written consent was obtained from the parents or guardians.
: Not applicable.
: The authors declare that they have no competing interests.