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Zebhauser,\ A.\ ; Baumert,\ J.J.\ ; Emeny,\ R.T.\ ; Ronel,\ J.*\ ; Peters,\ A.\ ; Ladwig,\ K.-H.
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What prevents old people living alone from feeling lonely? Findings from the KORA-Age-study.
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Aging Ment. Health 19, 773-780 (2015)
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