TY - JOUR A1 - Schulze, A. A1 - Mons, U. T1 - The evolution of educational inequalities in smoking: A changing relationship and a cross-over effect among German birth cohorts of 1921-70 Y1 - 2006 DO - 10.1111/j.1360-0443.2006.01458.x JF - Addiction VL - 101 IS - 7 SP - 1051 EP - -1056 ER -