There are actually hundreds or even thousands of doctors around the world so busy saving lives with Ivermectin that they don't have time or money to do multi-million $$$ clinical trials or to publish in the "owned" medical journals.
It is in fact a serious dereliction of duty on the part of the Australian Department of Health to not fully investigate the use of Ivermectin as an early medication for Covid-19. The fact that they haven't doesn't surprise as they seem to be under the control of the FDA, which of course is controlled by the FDA.