Correction: Expression of immunohistochemical markers in non-oropharyngeal head and neck squamous cell carcinoma in Ghana

• Osei Owusu-Afriyie,
• W. K. B. A. Owiredu,
• Kwabena Owusu-Danquah,
• Christine Komarck,
• Susan K. Foltin,
• Rita Larsen-Reindorf,
• Emmanuel Acheampong,
• Solomon E. Quayson,
• Mark E. Prince,
• Jonathan B. McHugh,
• Peter Donkor,
• Sofia D. Merajver,
• J. Chad Brenner