Tamura, Itaru
Takei, Asako
Hamada, Shinsuke
Soma, Hiroyuki
Nonaka, Michio
Homma, Sanae
Moriwaka, Fumio
Article History
Received: 1 February 2018
Revised: 23 April 2018
Accepted: 24 April 2018
First Online: 3 May 2018
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest.
: The study was performed in accordance with the guidelines of the Declaration of Helsinki. Written informed consent was obtained from each subject, and the study was approved by the local ethics committee.