Impact Factor
4.40
Estimated influence, citation density, publishing volume, and citation integrity from the analytics table.
Volume, recency, access pattern, and citing-community signals from the journal analytics record.
Recent article records with DOI-first linking and condensed abstracts.
Title from BioMed Central archive volume screen (viewed Aug. 16, 2002).
Articles are added consecutively to the current annual volume.
Mode of access: Internet.