Text and Data Mining valid from 2019-10-26
Received: 28 September 2018
Accepted: 24 September 2019
First Online: 26 October 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the Institutional Review Board (IRB) of St. Paul’s Hospital Millennium Medical College (SPHMMC) in Addis Ababa, Ethiopia. And all of the participants signed informed consents before participating in the study.
: Not applicable.
: The authors declare that they have no competing interests.