TY - JOUR A1 - Schmidt, L. A1 - Sobotka, T. A1 - Bentzen, J. G. A1 - Nyboe Andersen, A. A1 - ESHRE Reproduction and Society Task Force T1 - Demographic and medical consequences of the postponement of parenthood Y1 - 2012 DO - 10.1093/humupd/dmr040 VL - 18 IS - 1 ER -