US policy keeps drugs out of reach in clinical trials abroad.
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Erika
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D002986:Clinical Trials as Topic / Q000191:economics / Q000331:legislation & jurisprudence*; D009316:National Institutes of Health (U.S.); D004364:Pharmaceutical Preparations / Q000191:economics*; D011640:Public Policy; D012109:Research Support as Topic / Q000191:economics*; D014481:United States
D004364:Pharmaceutical Preparations