Umino, Kento
Fujiwara, Shin-ichiro
Ikeda, Takashi
Kawaguchi, Shin-ichiro
Toda, Yumiko
Ito, Shoko
Ochi, Shin-ichi
Nagayama, Takashi
Mashima, Kiyomi
Minakata, Daisuke
Nakano, Hirofumi
Yamasaki, Ryoko
Morita, Kaoru
Kawasaki, Yasufumi
Yamamoto, Chihiro
Ashizawa, Masahiro
Hatano, Kaoru
Sato, Kazuya
Oh, Iekuni
Ohmine, Ken
Muroi, Kazuo
Kanda, Yoshinobu
Article History
Received: 25 November 2018
Accepted: 12 June 2019
First Online: 25 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: For this retrospective study, formal informed consent is not required. This study was approved by the ethics committee of Jichi Medical University and performed in accordance with the Declaration of Helsinki and its later amendments.