http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Title from caption (viewed Feb. 7, 2003).
Articles are added consecutively to the current annual volume. Each volume corresponds to a calendar year. There are no issue numbers on BioMed Central.
Individual articles are numbered with volume and article number on BioMed Central, e.g., 1:1; with volume, issue, and article number on PubMed Central, e.g., 1(1):1.