Article History

Received: 21 November 2017

Accepted: 3 January 2018

First Online: 25 January 2018

Change Date: 24 August 2018

Change Type: Correction

Change Details: In the original publication, the author name was published incorrectly as “Riku Hamda”. The corrected name is given in this Correction.

Change Date: 3 December 2021

Change Type: Correction

Change Details: A Correction to this paper has been published:

Change Details: https://doi.org/10.1007/s10157-021-02144-2

Compliance with ethical standards

:

: The authors have declared that no conflict of interest exists.

: All procedures involving human participants were in accordance with ethical standards of the institution at which the studies were conducted (Approval Number in Japanese Red Cross Nagoya Daini Hospital 1065), and with standards of the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

: Written informed consent was not obtained, because of use of retrospective data for clinical use. This information is noted on the website (opt-out).