title: Early stopping of trials.
authors.forename: G
authors.initials: G
authors.lastname: Hopf
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D001943:Breast Neoplasms / Q000188:drug therapy; D002986:Clinical Trials as Topic; D004345:Drug Industry; D004992:Ethics, Medical; D005260:Female; D006801:Humans