Citing an UpToDate topic

Cite the UpToDate topic as a chapter in a book titled UpToDate, edited by Denise S. Basow, published by UpToDate in Waltham, MA. There are no page numbers to cite. Since UpToDate is released every four months, each topic will appear (i.e., be published) in each release we issue, so the publication year for any topic should be the current year.

For example:

Marion, DW. Diaphragmatic pacing. In: UpToDate, Basow, DS (Ed), UpToDate,
Waltham, MA, 2010.