If you're looking to conduct clinical studies outside the U.S., you might do well to read this superb article from Bruce Mackler on GEN, "Spotlight on the FDA Outsourcing Clinicals; Medical Journal Articles; and Contract Manufacturing Liability Issues. Mackler says, "In today’s financing environment, the absence of early clinical data presents a high barrier to obtaining funding. Investors often say “show me the clinical data that show that the drug is safe and works and I will show you my money.” As a result, biopharma companies have moved into early non-U.S. clinical trials that have lower safety data burdens. These studies are being conducted in less wealthy (a.k.a., developing) countries, where Phase I trials can be more rapid and less costly. This strategy has been promoted by CROs established in these countries."
The article provides some great tips, not to be overlooked.