International differences in cardiovascular clinical trials.
O'Shea
J C
JC
Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, NC 27715, USA. oshea002@mc.duke.edu
Califf
R M
RM
D002318:Cardiovascular Diseases / Q000628:therapy*; D002986:Clinical Trials as Topic / Q000379:methods / Q000592:standards; D006801:Humans; D007391:International Cooperation; D012107:Research Design / Q000592:standards*