Their long-term safety and efficacy have not been evaluated on humans in large-scale medical trials.
She played an Iranian mother who was at the hospital to participate in a medical trial for Alzheimer's disease.
Simon Cox investigates whether proposed changes to medical trials can make a difference.
But there were never any medical trials on the fake gels.
If the use of personalized medicine is widely adopted and used, it will make medical trials more efficient.
There were several reasons that not many medical trials were done with children.
Interim analysis is important in medical trials, to ensure that the patients are not exposed to unnecessary danger during the trial.
An investigation into abuse of children in state care found some children had been subject to medical trials without their parents' consent.
For example, suppose that a medical trial compares four treatments.
But doctors have begun studying the benefits in medical trials only recently.