Received: 30 January 2021
Accepted: 10 May 2021
First Online: 19 May 2021
: Animal experiments were conducted in compliance with internationally accepted standard guidelines for scientific research (OECD, 2001). The study was also carried out in compliance with the ARRIVE guidelines. The research protocol was approved by the College of Natural Sciences Institutional Review Board (CNS-IRB) (Approval Minute No. IRB/020/2016), Addis Ababa University.
: Not applicable.
: The authors declare that they have no competing interests.