Researchers say it's the first large-scale study to link lack of sleep to risky behavior.

The first large-scale study on the subject is going to be started this summer.

There is no solid evidence backing any drug treatments, but several large-scale studies could soon change that.

I guess this is something they're doing at Berkeley as part of a large-scale study.

No large-scale studies have been done on the prevalence of the triad.

Considerable evidence, including several large-scale studies of twins, points toward a genetic component.

A similar large-scale study is under way in Europe.

Its members also conducted the first large-scale study of sexual harassment in Afghanistan.

Further, large-scale studies are needed to confirm the encouraging results obtained so far.

The first large-scale geological study of the area was conducted in 1945-1948.