title: The methodologic dilemma in retrospectively correlating the amount of chemotherapy received in adjuvant therapy protocols with disease-free survival.
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols; D001943:Breast Neoplasms / Q000188:drug therapy / Q000601:surgery; D002986:Clinical Trials as Topic; D003520:Cyclophosphamide / Q000008:administration & dosage*; D004305:Dose-Response Relationship, Drug; D004359:Drug Therapy, Combination; D005069:Evaluation Studies as Topic; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage*; D006801:Humans; D008207:Lymphatic Metastasis; D008433:Mathematics; D008727:Methotrexate / Q000008:administration & dosage*; D008875:Middle Aged; D011379:Prognosis; D012044:Regression Analysis; D012189:Retrospective Studies; D013997:Time Factors
chemical_list: D003520:Cyclophosphamide; D005472:Fluorouracil; D008727:Methotrexate