Funding for this research was provided by:
King Abdullah International Medical Research Center (RC15/091/R)
Received: 2 January 2018
Accepted: 26 March 2018
First Online: 6 April 2018
Ethics approval and consent to participate
: This study was conducted in accordance with the Declaration of Helsinki and the International Council for Harmonisation – Good Clinical Practice (ICH-GCP). The study was approved by the institutional review board at King Abdulaziz Medical City (RC15/091/R). All patients or substitute decision-makers (next of kin) of eligible patients (for patients lacking decision-making capacity) signed informed consent before enrolment.
: 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.