Article History
Received: 29 May 2019
Accepted: 11 September 2019
First Online: 23 September 2019
Compliance with ethical standards
:
: The authors declare no conflicts of interest in association with the present study.
: This research does not have any funding sources.
: The institutional review board (IRB) for human subject research in University of Pittsburgh approved all aspects of this study (ID: STUDY19030196).
: No informed consent was needed in this study because this is a retrospective chart review of standard care procedures of de-identified patients.