title: Retraction. Initial analyses of colon cancer-specific antigen (CCSA)-3 and CCSA-4 as colorectal cancer-associated serum markers.
authors.forename: Robert E
authors.initials: RE
authors.lastname: Schoen
authors.forename: Joel L
authors.initials: JL
authors.lastname: Weissfeld
authors.forename: Lori J
authors.initials: LJ
authors.lastname: Sokoll
authors.forename: Daniel W
authors.initials: DW
authors.lastname: Chan
authors.forename: Grant W
authors.initials: GW
authors.lastname: Cannon
authors.forename: Robert H
authors.initials: RH
authors.lastname: Getzenberg