Funding for this research was provided by:
Text and Data Mining valid from 2020-03-18
Received: 29 January 2020
Accepted: 11 March 2020
First Online: 18 March 2020
Ethics approval and consent to participate
: The study was ethically approved from the Institutional Review Board at Alneelain University and from Research Ethics Committee- Sudan Academy of Sciences. Stored blood samples were coded, not identified by names. Data were kept anonymous. Informed consent is not applicable for this particular study.
: Not applicable.
: No conflicts of interest, financial or otherwise, are declared by the authors.