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Authors
Naser, Warda
Adam, Ishag https://orcid.org/0000-0001-5031-7741
Rayis, Duria A.
Ahmed, Mohammed A.
Hamdan, Hamdan Z. https://orcid.org/0000-0001-9269-8239
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Article History
Received: 28 August 2017
Accepted: 25 July 2019
First Online: 16 August 2019
Ethics approval and consent to participate
: The study received ethical clearance from Al-Neelain University Research Ethics Review Board in Al-Neelain University, Sudan. All participants provide an informed written consent.
: Not applicable.
: One of the authors (Ishag Adam) is a member in BMC Pregnancy and Childbirth editorial board. Other authors declare that they have no competing of interests.
