1 Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
2 Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Epidemiology, Disease Control, and Prevention, Hiroshima University Graduate school of Biomedical and Health Sciences, Hiroshima, Japan. Electronic address: fukuma.shingo.3m@kyoto-u.ac.jp.