She said further studies with larger numbers of subjects were needed to confirm the findings.

But more studies will be needed to confirm the findings.

Still, they say that more study is needed to confirm their findings.

More research with larger samples is needed to confirm this finding.

But they said further checks would be needed to confirm that.

However, further research is needed to confirm and expand upon these findings.

A biopsy is needed to confirm whether she actually has cancer or not.

Prospective studies are needed to confirm the results of this study.

But the authors said more study was needed to confirm the theory.

But more evidence is needed to confirm its safety and effectiveness.