Citation:Sasieni P, Castanon A, Cuzick J 2009
From National Cancer Control Policy
Sasieni P, Castanon A, Cuzick J. Effectiveness of cervical screening with age: population based case-control study of prospectively recorded data. BMJ 2009 Jul 28;339:b2968 Available from: http://www.ncbi.nlm.nih.gov/pubmed/19638651.
Critical appraisals