Fukushima, Kensuke
Miyagi, Masayuki
Inoue, Gen
Shirasawa, Eiki
Uchiyama, Katsufumi
Takahira, Naonobu
Takaso, Masashi
Article History
Received: 5 February 2018
First Online: 3 July 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Ethical approval was obtained from our Institutional Review Board (IRB). The study was performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Informed consent was obtained from all participants enrolled in this study.