As of 1997, only about 150 cases had been reported in the medical literature.

Only about 40 cases have been reported in the medical literature.

Here is an example of what goes on in medical literature.

By 2000, over 250 human cases had been reported in the medical literature.

Some possible side effects have been reported in medical literature.

It has only been reported a few dozen times in medical literature.

Up until 2003, more than 125 cases had been documented in medical literature.

While at Oxford he also made a study of medical literature.

A 2005 review article found a total of 36 cases described in the medical literature.

Several treatments that have been reported in the medical literature.