1. Department of Pathology; University of Occupational and Environmental Health; Kitakyushu Japan
2. The First Department of Internal Medicine; University of Occupational and Environmental Health; Kitakyushu Japan
3. Department of Pathology; Faculty of Medicine; Fukuoka University; Fukuoka Japan
4. Shared-Use Research Centre; University of Occupational and Environmental Health; Kitakyushu Japan