DOI:
10.1055/s-00000062
Psychiatrische Praxis
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References
GfK.
Kaufkraft Deutschland.
2018. Im Internet:
https://www.gfk.com/fileadmin/user_upload/dyna_content/DE/documents/Press_Releases/2017/20171212_PM_GfK_Kaufkraft_Deutschland-2018_dfin.pdf
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