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Associations and Synergistic Effects for Psychological Distress and Chronic Back Pain on the Utilization of Different Levels of Ambulatory Health Care. A Cross-Sectional Study from Austria
- Kathryn Hoffmann,
- Wim Peersman,
- Aaron George,
- Thomas Ernst Dorner
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- Published: July 28, 2015
- https://doi.org/10.1371/journal.pone.0134136