Global clinical trials: challenges ahead.
Stephen L
SL
Hauser
S Claiborne
SC
Johnston
D002986:Clinical Trials as Topic / Q000191:economics / Q000941:ethics / Q000592:standards* / Q000639:trends*; D019049:Developed Countries; D003906:Developing Countries; D006801:Humans; D010361:Patients / Q000706:statistics & numerical data; D014481:United States