New PubModel for PubMed Citations

In mid-June 2013, a new publication model (PubModel) called Electronic-eCollection was introduced for PubMed citations from electronic-only journals. The PubModel value is carried in the journal citation and is used for the citation display in PubMed. The new value Electronic-eCollection means an article is published electronically on a specific date (this date must include year, month, and day in numerical format) and then is also associated with an electronic collection date (akin to an issue; this date can be a year or a year and month, but never a year, month, and day). NLM determines the PubModel based on the data submitted by the publishers.

A new display value of eCollection precedes the collection date information in a citation display. The specific article date will display after the journal title abbreviation while the collection date will display near the end of the source information (see Figure 1).

Figure 1: Sample display for journal citation with
PubModel = Electronic-eCollection.

This particular article cited in Figure 1 was published online on January 25, 2013, yet was included in the Volume 3, 2012 collection as deposited in PMC.

See Use of Article and ArticleDate Attribute Values in Creating the Source Area of the MEDLINE/PubMed Citation Display for documentation on all of the PubModel values.