TY - JOUR A1 - Hansen, M.-L.H. A1 - Mølgaard-Nielsen, D. A1 - Knudsen, L.B. A1 - Keiding, N. T1 - Rates of induced abortion in Denmark according to age, previous births and previous abortions Y1 - 2009 DO - 10.4054/DemRes.2009.21.22 JF - Demographic Research VL - 21 IS - 22 ER -