Koji Inagaki, Takeshi Kikuchi, Toshihide Noguchi, Akio Mitani, Keiko Naruse, Tatsuaki Matsubara, Masamitsu Kawanami, Jun Negishi, Yasushi Furuichi, Eiji Nemoto, et al. A large-scale observational study to investigate the current status of diabetic complications and their prevention in Japan: Oral and dental findings at baseline -JDCP study 6-. Journal of the Japan Diabetes Society. 2020. 63. 4. 195-205