Grebe, H. P., P. Ferreira, C. do Carmo, A. Rodrigues, and E. Almiro. “Spondylodiscitis and Epidural Abscess - Two Clinical Cases”. Internal Medicine, vol. 8, no. 4, Dec. 2001, pp. 188-91, https://revista.spmi.pt/index.php/rpmi/article/view/1922.