Finally, we need serious research on the body of evidence.

And thanks to her parents, she needed little research to play the period role in "1969."

However, the evidence was not of very good quality and more research is needed.

This is based on a small study however and further research will be needed.

However, still questions remain and further research is needed in several areas.

Early results show it might be effective, but more research is needed.

But more research is needed before experts can say for sure.

However, further research in older children and adults is needed.

Many people believe additional research is needed to look at this earlier part of the process.

However, some others believe that the concept needs further research.