Ahmed, Mohamed A.
Sharif, Manal E.
Rayis, Duria A.
Nasr, Abubakr M.
Adam, Ishag https://orcid.org/0000-0001-5031-7741
Article History
Received: 30 October 2017
Accepted: 9 January 2018
First Online: 22 January 2018
Ethics approval and consent to participate
: The study received ethical clearance from the Research Board at the Department of Obstetrics and Gynecology, Faculty of Medicine, University of Khartoum, Sudan.
: Not applicable.
: The authors declared that they have no competing interests.
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