Shinkai, Koichi http://orcid.org/0000-0002-7564-9934
Takada, Mayo
Kawashima, Satoki
Suzuki, Masaya
Suzuki, Shiro
Funding for this research was provided by:
Grants-in-Aid for Scientific Research (C) from the Japan Society for the Promotion of Science (23234567)
Article History
Received: 26 March 2018
Accepted: 1 August 2018
First Online: 8 August 2018
Compliance with ethical standards
: The present study was reviewed and approved by The Human Research Committee of the Nippon Dental University School of Life Dentistry at Niigata (approval number ECNG-H-9).
: The authors declare that they have no competing interests.