Fawley, W. N., Parnell, P., Verity, P., Freeman, J., & Wilcox, M. H. (2005). Molecular Epidemiology of Endemic Clostridium difficile Infection and the Significance of Subtypes of the United Kingdom Epidemic Strain (PCR Ribotype 1). American Society for Microbiology.

Fawley, Warren N., Peter Parnell, Paul Verity, Jane Freeman, e Mark H. Wilcox. Molecular Epidemiology of Endemic Clostridium Difficile Infection and the Significance of Subtypes of the United Kingdom Epidemic Strain (PCR Ribotype 1). American Society for Microbiology, 2005.

Fawley, Warren N., et al. Molecular Epidemiology of Endemic Clostridium Difficile Infection and the Significance of Subtypes of the United Kingdom Epidemic Strain (PCR Ribotype 1). American Society for Microbiology, 2005.