Kashiwagi, Yasuyo
Agata, Kazushi
Go, Soken
Nishimata, Shigeo
Kawashima, Hisashi
Article History
Received: 25 January 2018
Accepted: 1 February 2018
First Online: 5 February 2018
Compliance with ethical standards
:
: All the authors have declared no competing interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee at which the studies were conducted and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.