DOI:
10.1055/s-00000056
Physikalische Medizin, Rehabilitationsmedizin, Kurortmedizin
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References
Kroenke K, Spitzer RL, Williams JBW. et al.
An Ultra-Brief Screening Scale for Anxiety and Depression: The PHQ–4.
Psychosomatics 2009;
50: 613-621
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