Yanamoto, Souichi http://orcid.org/0000-0003-2372-8347
Umeda, Masahiro
Kioi, Mitomu
Kirita, Tadaaki
Yamashita, Tetsuro
Hiratsuka, Hiroyoshi
Yokoo, Satoshi
Tanzawa, Hideki
Uzawa, Narikazu
Shibahara, Takahiko
Ota, Yoshihide
Kurita, Hiroshi
Okura, Masaya
Hamakawa, Hiroyuki
Kusukawa, Jingo
Tohnai, Iwai
Article History
Received: 22 September 2017
Accepted: 26 January 2018
First Online: 30 January 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: For this type of study, formal consent is not required.
: The need for informed consent was waived by the Institutional Review Boards of each participating institution because of the retrospective nature of the study.