1 Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.
2 Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan. katagiri.peri@tmd.ac.jp.
3 Division of Metabolism and Endocrinology, Faculty of Medicine, Saga University, Saga, Japan. takahas2@cc.saga-u.ac.jp.
4 Division of Metabolism and Endocrinology, Faculty of Medicine, Saga University, Saga, Japan.
5 Eguchi Hospital, Ogi, Saga, Japan.
6 Department of Molecular Epidemiology, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.
7 Department of Comprehensive Reproductive Medicine, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.
8 Liver Center, Saga University Hospital, Saga, Japan.