Correction to: Programmed death-ligand 1 and tumor-infiltrating lymphocytes (TILs) - low TIL density may predict poorer long-term prognosis in T1 laryngeal cancer

Affiliations

• ¹ Department of Otorhinolaryngology - Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland. pihla.pakkanen@helsinki.fi.
• ² Department of Otorhinolaryngology - Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
• ³ Department of Otorhinolaryngology - Head and Neck Surgery, University of Tampere and Tampere University Hospital, Tampere, Finland.
• ⁴ Department of Otorhinolaryngology - Head and Neck Surgery, University of Turku and Turku University Hospital, Turku, Finland.
• ⁵ Department of Otorhinolaryngology - Head and Neck Surgery, University of Oulu and Oulu University Hospital, Oulu, Finland.
• ⁶ Department of Otorhinolaryngology - Head and Neck Surgery, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland.
• ⁷ Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
• ⁸ Department of Pathology, University of Turku and Turku University Hospital, Turku, Finland.
• ⁹ Department of Pathology, University of Oulu and Oulu University Hospital, Oulu, Finland.
• ¹⁰ Fimlab Laboratories, Department of Pathology, Tampere University Hospital, Tampere, Finland.
• ¹¹ Department of Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
• ¹² Department of Oral Pathology and Radiology, University of Turku, Turku, Finland.