title: NSABP B-42: a clinical trial to determine the efficacy of five years of letrozole compared with placebo in patients completing five years of hormonal therapy consisting of an aromatase inhibitor (AI) or tamoxifen followed by an AI in prolonging disease-free survival in postmenopausal women with hormone receptor-positive breast cancer.
authors.affiliation: Cancer Center, Aultman Health Foundation, Canton, OH 44710, USA.
authors.forename: Eleftherios P
authors.initials: EP
authors.lastname: Mamounas
authors.forename: Barry
authors.initials: B
authors.lastname: Lembersky
authors.forename: Jong-Hyeon
authors.initials: JH
authors.lastname: Jeong
authors.forename: Walter
authors.initials: W
authors.lastname: Cronin
authors.forename: Barbara
authors.initials: B
authors.lastname: Harkins
authors.forename: Charles
authors.initials: C
authors.lastname: Geyer
authors.forename: Donald Lawrence
authors.initials: DL
authors.lastname: Wickerham
authors.forename: Soonmyung
authors.initials: S
authors.lastname: Paik
authors.forename: Joseph
authors.initials: J
authors.lastname: Costantino
authors.forename: Norman
authors.initials: N
authors.lastname: Wolmark
mesh_terms: D018931:Antineoplastic Agents, Hormonal / Q000627:therapeutic use*; D047072:Aromatase Inhibitors / Q000627:therapeutic use*; D001943:Breast Neoplasms / Q000188:drug therapy*; D002277:Carcinoma / Q000188:drug therapy*; D017024:Chemotherapy, Adjuvant; D018572:Disease-Free Survival; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D000077289:Letrozole; D009367:Neoplasm Staging; D009570:Nitriles / Q000627:therapeutic use*; D018579:Patient Selection; D017698:Postmenopause; D013629:Tamoxifen / Q000627:therapeutic use*; D014230:Triazoles / Q000627:therapeutic use*
chemical_list: D018931:Antineoplastic Agents, Hormonal; D047072:Aromatase Inhibitors; D009570:Nitriles; D014230:Triazoles; D013629:Tamoxifen; D000077289:Letrozole