title: The association between serum folate levels and periodontal disease is not clearly established.
authors.affiliation: Centers for Disease Control and Prevention, National Center for Health Statistics, 3311 Toledo Road, Room 4416, Hyattsville, MD 20782, USA. bfd1@cdc.gov
authors.forename: Bruce A
authors.initials: BA
authors.lastname: Dye
authors.forename: Bethene
authors.initials: B
authors.lastname: Ervin
authors.forename: Margaret A
authors.initials: MA
authors.lastname: McDowell