In 30 to 35 percent of patients, no cause can be found.

When her program started, 90 percent of its patients died in the hospital.

"About 8 percent of our patients get free care every year."

Such side effects were reported by 2.4 percent of patients in one large study.

The two together are effective with 90 percent of patients.

The hospital found that more than 7 percent of patients were walking out because they had to wait too long.

Only about 30 to 40 percent of his patients, he said, found the drug helpful.

Other studies find that about 30 percent of patients take medicine for the full 10 days.

Often, the problems cleared up, but in 30 percent of patients they did not.

About 15 percent of patients will need no further intervention, he said.