1. Department of Oral and Maxillofacial Functional Rehabilitation, Graduate School of Medicine, University of the Ryukyus, Nishihara, Okinawa 903‑0215, Japan
2. Department of Thoracic and Cardiovascular Surgery, University Hospital of The Ryukyus, Nishihara, Okinawa 903‑0215, Japan
3. Department of Pathology, University Hospital of the Ryukyus, Nishihara, Okinawa 903‑0215, Japan
4. Department of Oral and Maxillofacial Surgery, University Hospital of the Ryukyus, Nishihara, Okinawa 903‑0215, Japan
5. Department of Pathology and Cell Biology, Graduate School of Medicine, University of the Ryukyus, Nishihara, Okinawa 903‑0215, Japan
6. Department of Infectious Diseases, Respiratory, and Digestive Medicine (The First Department of Internal Medicine), University Hospital of the Ryukyus, Nishihara, Okinawa 903‑0215, Japan
7. Department of Thoracic and Cardiovascular Surgery, Graduate School of Medicine, University of the Ryukyus, Nishihara, Okinawa 903‑0215, Japan