Hayakawa, Toyokazu
Tabata, Ken-ichi
Tsumura, Hideyasu
Kawakami, Shogo
Katakura, Takeo
Hashimoto, Masatoshi
Watanabe, Yusuke
Iwamura, Masatsugu
Hasegawa, Tomoyuki
Ishiyama, Hiromichi http://orcid.org/0000-0001-7907-8422
Article History
Received: 30 March 2020
Accepted: 4 June 2020
First Online: 14 June 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the institutional review board of Kitasato University School of Medicine (B17-245). No consent was required as this study used anonymized registry data.
: Not applicable.