Funding for this research was provided by:
King Abdulaziz City for Science and Technology (AT-34-103)
Received: 1 July 2018
Accepted: 16 December 2018
First Online: 27 December 2018
Ethics approval and consent to participate
: The study has been reviewed and approved by Office of Research Affairs (ORA) at King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh. Since this study is a retrospective clinical study the need for written consent was formally waved by ORA at KFSHRC, Riyadh, Saudi Arabia.
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.