Researchers analyzing the literature found 84 studies involving 11,980 patients - or so they thought.

It has settled a class-action lawsuit involving 66 patients for $15 million.

Intermezzo was studied in two clinical trials involving more than 370 patients.

They cautioned that the findings were preliminary results of a study involving only a few patients.

In response, the federal government started a clinical trial involving 1,218 patients.

A new study involving 1,800 patients and six major hospitals failed to prove the healing power of prayer.

A systematic review identified 8 studies involving 235 patients (142 with delirium).

The study consisted of four phases involving 51 patients each.

The review included six randomized, controlled trials involving 454 patients.

The authors based their findings on data gathered in two international drug trials involving more than 15,000 patients.