Article History
Received: 18 March 2019
Revised: 5 June 2019
Accepted: 15 July 2019
First Online: 5 August 2019
Compliance with ethical standards
:
: The scientific guarantor of this publication is Satoshi Takagi.
: The authors declare that they have no conflict of interest.
: No complex statistical methods were necessary for this paper.
: Written informed consent was not required because this was a phantom study.
: This phantom study did not require institutional review board approval.
: • Experimental• Performed at one institution