Comment: After several years of treatment this has been the most effective.

However, drug safety and efficacy beyond 1 year of total treatment have not been established.

But almost a year of treatment may be needed.

He spent a year of rest and treatment in Canada.

But after three years of hope and treatment, the family sought to remove the tubes.

Allergy shots may need years of treatment, but they work in most cases.

The jury would see that she had not changed after five years of psychiatric treatment paid for with their taxes.

By contrast, three to five years of conventional treatment can add up to this much, they said.

But it takes 18 months to 2 years of treatment to see any effect.

After a year of treatment, his cancer seems to be cured.