Perhaps you have no idea, but the people closest to this science, including the countless government agencies around the world that have given authorization, have a pretty good idea. The design and length of clinical trials is not arbitrary, but your personal idea of "long term" is arbitrary.
Perhaps you have no idea, but the people closest to this science, including the countless government agencies around the world that have given authorization, have a pretty good idea. The design and length of clinical trials is not arbitrary, but your personal idea of "long term" is arbitrary.