Descripción
Notas:Bibliographic Level Mode of Issuance: Monograph
Descripción Física:1 online resource
Formato:Mode of access: Internet from the AHRQ web site. Address as of 6/27/06: http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=hstat2.chapter.525; current access available via PURL.
Bibliografía:Includes bibliographical references.