1 Applied Research, American Dental Association Science and Research Institute, Chicago, IL, United States.
2 Microbial Genomics and Ecology, Center for the Planetary Health and Innovation Science, The IDEC Institute, Hiroshima University, Higashihiroshima, Japan.
3 Project Research Center for Holobiome and Built Environment (CHOBE), Hiroshima University, Higashihiroshima, Japan.