Article History
Received: 8 June 2020
Accepted: 11 September 2020
First Online: 30 September 2020
Conflicts of Interest
: Dr. Murphy, Dr. Wolfer and Dr. Hendrickson have nothing to disclose.
: The authors adhered to all ethical responsibilities. Given the retrospective nature of this study, formal consent is not required.
: This study is exempt from IRB as there was no experimentation on human subjects.