TY - JOUR A1 - Martikainen, P. A1 - Mäkelä, P. A1 - Koskinen, S. A1 - Valkonen, T. T1 - Income differences in mortality: a register-based follow-up study of three million men and women Y1 - 2001 DO - 10.1093/ije/30.6.1397 JF - International Journal of Epidemiology VL - 30 IS - 6 SP - 1397 EP - -1405 ER -