The Myth of no control groups
Great summary… informative and simple 👍
I was in the initial trial of the Salk vaccine when I was a first grader; I got the placebo and had to be given the real stuff subsequently. So yes, there was a control group.
Great summary… informative and simple 👍
I was in the initial trial of the Salk vaccine when I was a first grader; I got the placebo and had to be given the real stuff subsequently. So yes, there was a control group.