Article History
Received: 2 August 2017
Revised: 12 February 2018
Accepted: 22 February 2018
First Online: 12 April 2018
Compliance with ethical standards
:
: The scientific guarantor of this publication is Dr Steven James.
: The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
: No complex statistical methods were necessary for this paper.
: Institutional Review Board approval was obtained.
: Written informed consent was waived by the Institutional Review Board.
: • retrospective• observational• performed at one institution