title: GRADING--levels of evidence.
abstract: As this journal changes, it is worth highlighting one the key elements of the Summaries we publish in Evidence-based Dentistry, namely the assignment of levels of evidence.Evidence-Based Dentistry (2009) 10, 24-25. doi:10.1038/sj.ebd.6400636.
authors.forename: Derek
authors.initials: D
authors.lastname: Richards