Ishii, Shunsuke
Kitazawa, Hidefumi
Mori, Takuya
Kirino, Aya
Nakamura, Shun
Osaki, Noriko
Shimotoyodome, Akira
Tamai, Ikumi
Article History
Received: 22 March 2019
Accepted: 12 July 2019
First Online: 29 July 2019
Competing Interests
: Ishii, Kitazawa, Mori, Kirino, Nakamura, Osaki, and Shimotoyodome are employees of Kao Corporation. Kao Corporation had no involvement to prepare this article in study design; in the collection, analysis and interpretation of data; in the writing of the report; and in the decision to submit the article for publication. Tamai has no competing of interest to declare.