Kurniawan, Arofi http://orcid.org/0000-0002-4698-9876
Yodokawa, Kouya
Kosaka, Moe
Ito, Koichi
Sasaki, Keiichi
Aoki, Takafumi
Suzuki, Toshihiko
Article History
Received: 3 September 2019
Accepted: 28 January 2020
First Online: 6 February 2020
Ethics approval and consent to participate
: Ethical approval has been obtained from the Independent Ethics Committee of Tohoku University School of Dentistry, Japan (permit no. 2017-3-17).
: Consent to publish this study is given by all the authors.
: The authors declare that they have no competing interests.