Observational Studies Are Cheap Compared to Clinical Trials

With observational studies, the treatment is not paid by the sponsor. That through the usual system, being it through pay insurance or whatever. Still, that makes it cheap. The other thing is also because it's an observational study, you don't have as many regulations as for clinical trials. Those these make observational studies pretty cheap compared to clinical studies. And there were also experiences where given the results from a new label extension study, so which were usually observational studies, but then in a randomized setting where we're initiated after seeing the results.