http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Aspirin or nonsteroidal anti-inflammatory drugs for the primary prevention of colorectal cancer
Agency for Healthcare Research and Quality.
Title from title screen (viewed on March 28, 2013).
Title from title screen (viewed on Aug. 31, 2007).