title: Casting doubt on the scientific utility of post-treatment biopsies in phase 1 trials.
authors.affiliation: The University of Chicago Medicine, Comprehensive Cancer Center, Chicago, Illinois.
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Ratain
mesh_terms: D001706:Biopsy; D017321:Clinical Trials, Phase I as Topic; D006801:Humans; D012107:Research Design