Received: 20 March 2018
Accepted: 15 August 2018
First Online: 15 September 2018
Ethics approval and consent to participate
: Ethical clearance for the study was obtained from the Institutional Health Research Ethics Review Committee (IHRERC) of Haramaya University. Letter support was written to Harar Red cross society blood bank from College of Health and Medical Sciences, Haramaya University. The objectives, risk and the benefits of the study was explained to head of Harar Red cross society Blood bank. Information obtained during the study was kept confidential and only intended for research purpose. Name or any identifiers of blood donors was not collected at time of review their cards.
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.