Researchers say they aren't sure why the drug is working.

But such a test will not be available for a few years, researchers said.

The population in each group of states was about the same, the researchers said.

The researchers said the total cost for the 16 patients was $180,908.

But the researchers say the test is not available to patients.

The researchers said they expected the test to cost $50.

And for some, researchers say, having the baby is a result of not making a decision.

Just how common, researchers cannot say, but one thing is sure.

The researchers say they think that the answer is no.

But those more difficult studies were well worth doing, researchers said.