Correction to: PD-L1 expression in tongue squamous cell carcinoma

Affiliations

• ¹ Department of Otolaryngology, Okayama Red Cross Hospital, Okayama, 700-8607, Japan.
• ² Departments of Otolaryngology Head and Neck Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan.
• ³ Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Kumamoto University, 1-1-1 Honjo, Kumamoto-City, Kumamoto, 860-8556, Japan.
• ⁴ Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan.
• ⁵ Departments of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan.
• ⁶ Department of Otolaryngology, Himeji Red Cross Hospital, Himeji, Hyogo, 670-8540, Japan.
• ⁷ Departments of Otolaryngology, Okayama Medical Center, Okayama, 701-1192, Japan.
• ⁸ Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Kumamoto University, 1-1-1 Honjo, Kumamoto-City, Kumamoto, 860-8556, Japan. yoriorita@kumamoto-u.ac.jp.