Received: 8 September 2020
Accepted: 19 April 2021
First Online: 30 April 2021
: Ethical clearance was obtained from the Institutional Review Board of the University of Gondar and an official letter was submitted to the director office of University of Gondar teaching hospital. There were no risks associated with this study. The collected data were used only for this research purpose. Consent was obtained from ART database managers before data extraction. All information collected from patient charts were treated with complete confidentiality.
: This manuscript does not contain any individual person’s data.
: None of the authors have any competing interests in the manuscript.