Boto, L.R., Calado, C., Vieira, M., Camilo, C., Abecasis, F., Campos, A.R. and Correia, M. 2011. Subdural empyema due to gemella morbillorum as a complication of acute sinusitis. Acta Médica Portuguesa. 24, 3 (Aug. 2011), 475–80. DOI:https://doi.org/10.20344/amp.454.