Neisseria meningitidis phenotypic markers and septicaemia, disease progress and case-fatality rate of meningococcal disease: a 20-year population-based historical follow-up study in a Danish county - Jensen, E S; Schønheyder, H C; Lind, I; Berthelsen, L; Nørgård, B; Sørensen, H T (J Med Microbiol, 2003)
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