Clinical manifestations and diagnosis of Listeria monocytogenes infection
www.UptoDate June, Gelfand, M.S., 2015
Acute Meningitis with a Negative Gram's Stain:Clinical and Management Outcomes in 171 Episodes
Am J Med 100:78-84, Elmore,J.G.,et al, 1996
Spinal Epidural Abscess
NEJM 293:463, Baker,A.S.,et al, 1975