TY - RPRT A1 - Hiekel, N. A1 - Kühn, M. T1 - Mental health before and during the COVID-19 pandemic: The role of partnership and parenthood status in growing disparities between types of families Y1 - 2021 DO - 10.4054/MPIDR-WP-2021-013 T3 - MPIDR Working Paper WP-2021-013 ER -