Kato, Tomotaka
Fujiwara, Natsuki
Ogawa, Tomohisa
Numabe, Yukihiro
Article History
Received: 8 September 2020
Accepted: 13 April 2021
First Online: 22 April 2021
Declarations
:
: We excluded patients who did not want to participate in this study via the opt-out method on the dental clinic website. This study was conducted in accordance with the Declaration of Helsinki. The ethical committee of the Japanese Society of Periodontology approved this study in a matched collective and the need for written consent would be waived via the opt-out method of the dental clinic website (JSP2019001).
: Not applicable.
: TK, NF, TO and YN state that they have no conflict of interest.