 The simplest example of the free-standing approach applies a general principle of equality directly to the case of health. (For general discussion of the grounds of egalitarianism, as well as of the character of different versions, see the entry on  egalitarianism.)  With some qualifications, the resultant requirement of “equality of health” is affirmed, for example, by Anthony Culyer and Adam Wagstaff (1993). This implies that any avoidable inequality in health is unfair or unjust.