Sylvester, P. A., Vipond, M. N., Kutt, E., Davies, J. D., Webb, A. J., & Farndon, J. R. (1997). A comparative audit of prevalent, incident and interval cancers in the Avon breast screening programme. Royal College of Surgeons of England.

Sylvester, P. A., M. N. Vipond, E. Kutt, J. D. Davies, A. J. Webb, and J. R. Farndon. A Comparative Audit of Prevalent, Incident and Interval Cancers in the Avon Breast Screening Programme. Royal College of Surgeons of England, 1997.

Sylvester, P. A., et al. A Comparative Audit of Prevalent, Incident and Interval Cancers in the Avon Breast Screening Programme. Royal College of Surgeons of England, 1997.