title: New challenges for 21st century clinical trials.
authors: Biometic Research Branch, National Cancer Institute, Bethesda, MD 20892-7434, USA. rsimon@nih.gov
authors: Richard
authors: R
authors: Simon
mesh_terms: D002986:Clinical Trials as Topic / Q000639:trends*; D006801:Humans; D010597:Pharmacogenetics; D013678:Technology, Pharmaceutical / Q000639:trends*; D013997:Time Factors