TY - JOUR A1 - Vågerö, D. A1 - Koupilová, I. A1 - Leon, D.A. A1 - Lithell, U.-B. T1 - Social determinants of birthweight, ponderal index and gestational age in Sweden in the 1920s and the 1980s Y1 - 2007 DO - 10.1111/j.1651-2227.1999.tb01138.x JF - Acta Paediatrica VL - 88 IS - 4 ER -