The $200,000 study, which took almost three years to complete, is considered the most comprehensive ever conducted on the subject.

Only if there is favorable risk benefit ratio, a study may be considered ethical.

A well-written, thorough study of what can be considered the first modern war.

He said the studies were not considered until the issue was settled within the Administration.

Therefore, studies that include children are considered to be "pure."

This latest study was considered to be the most comprehensive and independent, however.

Those studies, although dated, are still considered the best data available.

His study that was directed towards animals can also be considered for humans.

The study is considered a highly important contribution to treatment of breast cancer.

In the Jewish religion, study is considered to be an important virtue.