Shibuya, Isao
Takami, Masamichi
Miyamoto, Arei
Karakawa, Akiko
Dezawa, Akira
Nakamura, Shigeru
Kamijo, Ryutaro
Article History
Received: 3 March 2017
Accepted: 8 November 2017
First Online: 20 November 2017
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: This study has been carried out with the approval of the ethics committee of Teikyo University School of Medicine (approval No: 12–001) and Showa University School of Dentistry (approval No: 2006–12). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee 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.