Received: 28 November 2019
Accepted: 17 July 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: Ethical approval was granted by the Ethics review committee of Al Gomhoury Hospital Hajjah City, Yemen who determined the study did not constitute human subject trial and approved the protocol for the research. Ethical approval was also obtained from the ethics review committee of Thamar University in Dhamar Yemen. All patient identifiers were removed prior to entry into the database and analysis.
: Not applicable.
: The authors declare that they have no competing interests.