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

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