Yakar, F., Dogan, I., Ozgural, O., Eroglu, U., Beton, S. and Unlu, A. 2017. Subdural empyema as a rare complication of sinonasal infection: a case report and review of literature. International Surgery Journal. 4, 10 (Sep. 2017), 3519–3522. DOI:https://doi.org/10.18203/2349-2902.isj20174528.