In eight, the treatment did not work, and they died of cancer.

They usually are considered only if other treatment does not work.

How do we know whether a particular treatment really works?

See your child's doctor at least every 3 to 6 months to check how well the treatment is working.

A treatment that worked one time may not work again.

The treatment, he said, does work well for some people.

A treatment that once worked well may no longer work.

But treatment may work better than experts used to think.

It may be hard to tell whether a treatment is working.

As her father says, the treatment worked, but the patient died.

This method was successfully used until the early 1960s, when additional treatment works were built at Arnfield and Godley.

Sewers and treatment works are unable to cope with the large volumes of rainwater entering the system.

"The fact is that treatment works and addiction is curable," Dr. Rosenthal said.

Clinical trials help show how well the new treatment works and what side effects it may cause.

In past years The Queen has opened a new university campus and visited a water treatment works and a contemporary art gallery.

Projects covered by the deal include effluent treatment works and gas supplies to eliminate the use of brown coal.

The treatment works were however completed in late 2004.

Instead, scientific studies proving that a treatment works are needed.

Two bridges were built across the cut to link the island which contains a water treatment works and a large extent of open space used for recreation.

A sewer system and a treatment works are required.