9WHO.TB impact measurement:policy and recommendations for how to assess the epidemioloeal burden of TB and the impact of TB control [M]. Geneva: WHO, 2010,9: 67.
10Bidstrup C.Andersen PH.Skinhoj P.et al. Tuberculous meningitis in acountry with a low incidence of tubercul-osis:still a serious disease and a diagnostic challenge [J]. Scandinavian Journal of Infectious Dis- eases, 2002,34 (11):811-814.