title: The influence of total nodes examined, number of positive nodes, and lymph node ratio on survival after surgical resection and adjuvant chemoradiation for pancreatic cancer: a secondary analysis of RTOG 9704.
authors.affiliation: Department of Radiation Oncology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA.
authors.forename: Timothy N
authors.initials: TN
authors.lastname: Showalter
authors.forename: Kathryn A
authors.initials: KA
authors.lastname: Winter
authors.forename: Adam C
authors.initials: AC
authors.lastname: Berger
authors.forename: William F
authors.initials: WF
authors.lastname: Regine
authors.forename: Ross A
authors.initials: RA
authors.lastname: Abrams
authors.forename: Howard
authors.initials: H
authors.lastname: Safran
authors.forename: John P
authors.initials: JP
authors.lastname: Hoffman
authors.forename: Al B
authors.initials: AB
authors.lastname: Benson
authors.forename: John S
authors.initials: JS
authors.lastname: MacDonald
authors.forename: Christopher G
authors.initials: CG
authors.lastname: Willett