Implementation of the International Covenant on Economic, Social and Cultural Rights : day of general discussion on the right to health : discussion paper / prepared by Juan Alvarez Vita, member of the Committee on the Right to Health, with particular emphasis on the implications of the principle of non-discrimination and of the concept that there is a minimum core content of each right which constitutes a "floor" below which the conditions should not be permitted to fall in any State party (E/1993/L.23, para. 4).