TY - JOUR A1 - Kravdal, Ø. T1 - Taking birth year into account when analysing effects of maternal age on child health and other outcomes: The value of a multilevel-multiprocess model compared to a sibling model Y1 - 2019 DO - 10.4054/DemRes.2019.40.43 VL - 40 IS - 43 ER -