A papper authord by Takao Minamidate was published in Health and Quality of Life Outcomes.
Takao Minamidate, Naoto Haruyama and Ichiro Takahashi: The development, validation, and psychometric properties of the Japanese version of the Child Oral Health Impact Profile-Short Form 19 (COHIP-SF 19) for school-age children. Health and Quality of Life Outcomes (2020) 18:224
https://doi.org/10.1186/s12955-020-01469-y