Text and Data Mining valid from 2019-04-03
Received: 2 December 2017
Accepted: 21 March 2019
First Online: 3 April 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from department of gynecology and obstetrics research and publication committee of Addis Ababa University. The approval letter numbered <i>MF/GYN/1001/2014</i> was then sent to Zewditu memorial hospital and Ghandi memorial hospital. A written informed consent was collected from all of the participants of the study.
: Not applicable
: The authors declare that they have no competing interests.
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