Impact Factor
2.64
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.
Each v. also has a distinctive theme title.
Latest issue consulted: 07.
Print issues ceased with 2013.
Also issued online.
Vols. for 06- issued also as supplements to Methods of information in medicine.