http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Routine prenatal care visits by provider specialty in the United States, 2009-2010
National Center for Health Statistics (U.S.)
1 online resource (7 pages, 1 unnumberd page) : color illustrations.
Sayeedha G. Uddin, Alan E. Simon, and Kelly Myrick.
Includes bibliographical references (page 7).