Shimada, Shoji
Sawada, Naruhiko
Oae, Sonoko
Seki, Junichi
Takano, Yojiro
Ishiyama, Yasuhiro
Nakahara, Kenta
Maeda, Chiyo
Hidaka, Eiji
Ishida, Fumio
Kudo, Shin-ei
Article History
Received: 15 October 2017
Accepted: 21 March 2018
First Online: 30 March 2018
Compliance with ethical standards
:
: Shoji Shimada, Naruhiko Sawada, Sonoko Oae, Junichi Seki, Yojiro Takano, Yasuhiro Ishiyama, Kenta Nakahara, Chiyo Maeda, Eiji Hidaka, Fumio Ishida, Shin‑ei Kudo declares that they have no conflicts of interest or financial ties to disclose.
: This study was approved by Showa University Northern Yokohama Hospital ethics committee and all the patients.
: For this type of retrospective study formal consent is not required.