(1) What is the relationship between the tax subsidy for people who have private medical aids and the means test used at public hospitals; (2) what is the cost of the tax subsidy to the State; (3) whether any studies have been conducted with regard to what it would cost the State if all beneficiaries who are currently on private medical aids were to start using public health facilities; if not, when will such a study be conducted; if so, what were the findings?