Funding for this research was provided by:
Hamad Medical Corporation
Article History
First Online: 15 April 2019
Compliance with Ethical Standards
:
: The authors declare that there are no sources or grants of financial support from any institution to be disclosed and no conflict of interests to be disclaimed or financial disclosure to be declared.
: The informed consent was waived (IRB approved, HIPAA compliant retrospective study).
: 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 or comparable ethical standards.