Long-term Cryptosporidium typing reveals the aetiology and species-specific epidemiology of human cryptosporidiosis in England and Wales, 2000 to 2003 Chalmers, R M and Elwin, K and Thomas, A L and Guy, E C and Mason, B, Eurosurveillance, 14, 19086 (2009), https://doi.org/10.2807/ese.14.02.19086-en