Nakamura, Keiko https://orcid.org/0000-0003-4964-669X
Kaya, Hiroyasu
Kobayashi, Tsutomu
Saito, Naoaki
Yamada, Masahito
Article History
Received: 4 January 2018
Accepted: 27 April 2018
First Online: 4 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Informed consent was obtained from all individual participants included in the study.