Text and Data Mining valid from 2018-08-08
Received: 17 September 2017
Accepted: 24 July 2018
First Online: 8 August 2018
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments and comparable ethical standards. Participants provided informed written consent. The Study protocol was ethically approved in Sudan by the Sudan Ministry of Health and in Norway by REK (Regional Committees for Medical and Health Research Ethics, reference no 2013/353/REK).
: Informed written consent was obtained from all individual participants included in the study including consent to publish anonymised results.
: The authors declare that they have no competing interests.
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