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Article History

Received: 8 May 2018

Accepted: 7 August 2018

First Online: 14 August 2018

Compliance with ethical standards

:

: This research was funded (in whole or in part) by HCA and/or an HCA affiliated entity. The views expressed in this publication represent those of the author(s) and do not necessarily represent the official views of HCA or any of its affiliated entities.

: The authors declare that they have no conflict of interest.

: All procedures performed in the 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.

: We are unable to provide a certified patient consent form at this time. Our patient population typically includes many transient individuals and it is not unusual for patients to be lost to follow-up. The treatment team has exhausted all available means in an effort to contact that patient and/or family including telephone and investigating the physical address on file. We however remain convinced that all elements of anonymity have been utilized to protect both the patient and their families.