Cross-sectional study of health impairment related to post COVID-19 condition among participants of a large population-based cohort in Germany - Diexer, Sophie; Frost, Jonas; Bärnighausen, Till; Brenner, Hermann; Gabrysch, Sabine; Greiser, Karin Halina; Kaaks, Rudolf; Klee, Bianca; Pfrommer, Laura R.; Purschke, Oliver; Mikolajczyk, Rafael (Scientific reports, 2025)