Leidl, Reiner https://orcid.org/0000-0002-7115-7510
Schweikert, Bernd
Hahmann, Harry
Steinacker, Juergen M.
Reitmeir, Peter
Funding for this research was provided by:
German Federal Ministry for Education and Research (01GD0108, 01GD0108, 01GD0108)
Federation of German Pension Insurance Institutes (02706, 02706, 02706)