Stablein, D M Survival analysis of drug combinations using a hazards model with time-dependent covariates. [electronic resource] - Biometrics Sep 1980 - 537-46 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. ISSN: 0006-341X Subjects--Topical Terms: Altretamine--administration & dosageAnimalsAntineoplastic Agents--administration & dosageDisease Models, AnimalDrug Therapy, CombinationFemaleLeukemia L1210--drug therapyMiceRazoxane--administration & dosageRisk