There are also day hospital for both groups of patients and an administration section.

He said that until recently most research into medical practice was based on relatively small groups of patients.

The third group of patients didn't use a mirror at all.

On the second floor, a group of patients is sitting together, singing.

"It's not for everyone, but it offers new hope to a certain group of patients."

The overall survival for this group of patients was 83%.

By contrast, in a group of similar patients who did not get the balance training, only a third reported significant relief.

It offers hope for a large group of patients who have a very bad outlook.

"In the first group of 50 patients, there was some effectiveness," the doctor said.

Future research needs to explore which treatment components are most effective with particular groups of patients.