Iwata, Yukimasa
Okushima, Hiroki
Takatsuka, Taisuke
Yoshimura, Daisuke
Kawamura, Tomohiro
Iio, Rei
Ueda, Yoshiyasu
Shoji, Tatsuya
Hayashi, Terumasa
Isaka, Yoshitaka
Article History
Received: 7 August 2019
Accepted: 28 February 2020
First Online: 12 April 2020
Compliance with ethical standards
:
: The author has no conflicts of interest to declare.
: The present study received ethical approval from the institutional review board (IRB Approval No. 28-S1201) and was performed in accordance with the principles of the Declaration of Helsinki. Informed consent was obtained from patients who were alive as of December 2016, and we clearly announced to patients and their relatives that the opportunity to opt out is always available at our hospital website.