Although outside researchers raised questions about the study's conclusions, the doctor betrayed little doubt.

Americans tend to roll their eyes when researchers raise the Japanese comparison.

Some researchers have also raised questions about the data behind the figure of 30 million men extrapolated from the Massachusetts study.

Several researchers have raised other methodological issues.

One researcher also raised new questions about the data that prompted the study of compound Q in the first place.

The researchers raised the fish in captivity, using dormant eggs collected in Zimbabwe.

The researchers raised hundreds of baby clownfish for 11 days, then split them into two test groups and one control group.

British researchers soon raised yet another question about the value of prostatectomies.

Cornstarch is generally believed to be safe, however some researchers have raised concerns over its use as well.

While the potential benefits of nanotechnology are known, researchers and concerned consumers alike have raised questions about the potential risks.