title: Leaders worry that U.S. is losing edge on cancer clinical trials.
authors: Renee
authors: R
authors: Twombly
mesh_terms: D002986:Clinical Trials as Topic / Q000191:economics* / Q000639:trends*; D003299:Cooperative Behavior; D004345:Drug Industry / Q000191:economics; D005060:Europe; D033161:Government Regulation; D006801:Humans; D007391:International Cooperation; D054547:National Cancer Institute (U.S.); D009369:Neoplasms / Q000188:drug therapy; D012107:Research Design; D012109:Research Support as Topic; D014481:United States