title: Prognostic heterogeneity in multilevel N2 non-small cell lung cancer patients: importance of lymphadenopathy and occult intrapulmonary metastases.
authors.affiliation: Department of Thoracic Surgical Oncology, Japanese Foundation for Cancer Research, Cancer Institute Hospital, Tokyo, Japan. yukinori.sakao@jfcr.or.jp
authors.forename: Yukinori
authors.initials: Y
authors.lastname: Sakao
authors.forename: Sakae
authors.initials: S
authors.lastname: Okumura
authors.forename: Mingyon
authors.initials: M
authors.lastname: Mun
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Uehara
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Ishikawa
authors.forename: Ken
authors.initials: K
authors.lastname: Nakagawa