What happens if something goes wrong?

You are treated first and the paperwork comes second. Every trial has a number that reaches a real person at any hour. Every problem gets written down, whether or not we think the drug caused it.

If the blind needs to be broken so we know what you took, it can be, at once, day or night. That rule is written down before the trial opens.

Written by two physicians. Checked against patient information from the US National Cancer Institute and Cancer Research UK.