It is difficult to design research trials for acupuncture.

A research trial conducted in 1995 demonstrated a 90% success rate among children.

Currently there is no evidence from research trials of a positive effect for any of these conditions.

Researchers face similar challenges in obtaining medical cannabis for research trial.

We can go right to people in the research trials.

The foundation began preliminary clinical research trials in 2010.

These and other factors may reduce the effectiveness of a screening procedure that has been proven effective in research trials.

"But that wasn't seen during the research trials."

Though research trials are ongoing, there is no evidence that any medications can significantly help this condition.

"A number of research trials time and time again have not found any significant differences," he said.