Davison, K. L., Crowcroft, N. S., Ramsay, M. E., Brown, D. W., & Andrews, N. J. (2003). Viral Encephalitis in England, 1989–1998: What Did We Miss? Centers for Disease Control and Prevention.

Davison, Katy L., Natasha S. Crowcroft, Mary E. Ramsay, David W.G Brown, and Nick J. Andrews. Viral Encephalitis in England, 1989–1998: What Did We Miss? Centers for Disease Control and Prevention, 2003.

Davison, Katy L., et al. Viral Encephalitis in England, 1989–1998: What Did We Miss? Centers for Disease Control and Prevention, 2003.