EMPIRICAL EVIDENCE OF HOW INEQUALITY NEGATIVELY INFLUENCES HEALTH SHOULD ADDRESS INEQUALITIES; BY TACKLING THE SYSTEMATIC DIFFERENCES IN LIFE CHANCES, LIVING STANDARDS AND LIFESTYLES ASSOCIATED WITH PEOPLE'S UNEQUAL POSITIONS IN THE SOCIOECONOMIC HIERARCHY, NOT ONLY IN THE DEPRIVED LIVING CONDITIONS OF THE LOWER SOCIAL CLASSES. -Valle, A. M. (2009) ‘Social class, marginality and self-assessed health: a cross-sectional analysis of the health gradient in Mexico’, International Journal for Equity in Health, 8, pp. 1–12. doi: 10.1186/1475-9276-8-3.