Figure 1 - Summary of study inclusion and exclusion process.

From the following article

The effectiveness of routine dental checks: a systematic review of the evidence base

C F Davenport, K M Elley, A Fry-Smith, C L Taylor-Weetman & R S Taylor

British Dental Journal 195, 87 - 98 (2003) Published online: 26 July 2003

doi:10.1038/sj.bdj.4810337