title: Hidden biases in an observational study of bevacizumab beyond progression.
authors.forename: Scott
authors.initials: S
authors.lastname: Kopetz
authors.forename: James L
authors.initials: JL
authors.lastname: Abbruzzese
mesh_terms: D000911:Antibodies, Monoclonal / Q000627:therapeutic use*; D061067:Antibodies, Monoclonal, Humanized; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D000068258:Bevacizumab; D015982:Bias; D015179:Colorectal Neoplasms / Q000188:drug therapy* / Q000453:epidemiology*; D018450:Disease Progression; D015340:Epidemiologic Research Design; D010818:Practice Patterns, Physicians'
chemical_list: D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D000970:Antineoplastic Agents; D000068258:Bevacizumab