Kubota, Miyuki
Kawashima, Motoko
Inoue, Sachiko
Imada, Toshihiro
Nakamura, Shigeru
Kubota, Shunsuke
Watanabe, Mitsuhiro
Takemura, Ryo
Tsubota, Kazuo
Article History
Received: 22 November 2020
Accepted: 8 March 2021
First Online: 19 March 2021
Competing interests
: KT is the CEO of Tsubota Laboratory, Inc., Tokyo, Japan, a company developing products for the treatment of dry eye disease. The rewards for the participants were provided by this company. The sponsor KT had a role in the design and writing of the study. The remaining authors declare that they have no conflicts of interests.