Article History
Received: 29 April 2019
Revised: 3 June 2019
Accepted: 13 June 2019
First Online: 5 July 2019
Compliance with ethical standards
:
: The scientific guarantor of this publication is André Euler.
: 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.
: One of the authors has significant statistical expertise.
: Not needed because of the design as a phantom study.
: Institutional Review Board approval was not required because of the design as a phantom study.
: • prospective• experimental• performed at one institution