Hagiwara, Yoshiyuki http://orcid.org/0000-0001-6647-7969
Ohyama, Tetsuo
Yasuda, Hiroyasu
Seki, Keisuke
Ikeda, Takayuki
Funding for this research was provided by:
The authors acknowledge the grant from the 8020 Promotion Foundation
Article History
Received: 7 February 2021
Accepted: 1 April 2021
First Online: 30 April 2021
Declarations
:
: This research was approved by the Ethics Committee of Nihon University School of Dentistry (No.2016-18).
: Not applicable
: Yoshiyuki Hagiwara, Tetsuo Ohyama, Hiroyasu Yasuda, Keisuke Seki and Takayuki Ikeda declare that they have no competing interests.