Socioeconomic inequalities in mortality among women and among men: an international study.
Mackenbach JP, Kunst AE, Groenhof F, Borgan JK, Costa G, Faggiano F, Józan P, Leinsalu M, Martikainen P, Rychtarikova J, et al. Am J Public Health. 1999 Dec; 89(12):1800-6.