Soon the door stood open and I entered the study.

He entered the study and was gone for a few minutes.

At last, she decided to enter the study and be with the others.

She watched him for a moment then entered her study.

The average blood sugar levels for both groups were lower than when they entered the study.

Within 33 months after entering the study, 30 percent of the men were dead, the researchers found.

Before entering the study, patients agreed to allow the choice of drug to be made by lot.

He entered the study, closed the door and picked up the phone.

So far, 800 patients have entered the study in 22 centers.

The youngest woman entering the study was 20 years old, and 10 were 40 or older.