Shiba, Tomoaki http://orcid.org/0000-0002-6644-2798
Takahashi, Mao
Shiba, Chieko
Matsumoto, Tadashi
Hori, Yuichi
Article History
Received: 4 December 2017
Accepted: 29 May 2018
First Online: 1 June 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The Institutional Review Board of Toho University Sakura Medical Center approved the study (No 2011-009 and 2010-012).
: We started research after obtaining informed consent from all participants in accord with the Declaration of Helsinki.