Article History
Received: 8 October 2019
Accepted: 14 February 2020
First Online: 27 February 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the Human Investigation Committee at our hospital and performed in accordance with the Declaration of Helsinki. Because of the retrospective nature of the study, the institutional review board waived the requirement for informed consent. To protect patient privacy, we removed all identifiers from our records upon completion of our analyses.
: Informed consent was obtained from all individual participants included in the study.