TY - JOUR A1 - Nierkens, V. A1 - de Vries, H. A1 - Stronks, K. T1 - Smoking in immigrants: Do socioeconomic gradients follow the pattern expected from the tobacco epidemic? Y1 - 2006 DO - 10.1136/tc.2006.014902 VL - 15 IS - 5 ER -