title: In response.
authors.affiliation: Department of Medicine, Division of Oncology, Washington University School of Medicine, St Louis, MO.
authors.forename: Helen
authors.initials: H
authors.lastname: Barraclough
authors.forename: Lorinda
authors.initials: L
authors.lastname: Simms
authors.forename: Ramaswamy
authors.initials: R
authors.lastname: Govindan
mesh_terms: D056808:Biostatistics; D002983:Clinical Competence; D006801:Humans; D016016:Proportional Hazards Models