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B. Löwe, M. Hartmann, B. Wild, C. Nikendei, K. Kroenke, D. Niehoff, P. Henningsen, S. Zipfel, and W. Herzog. Journal of general internal medicine, 23 (2):
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C. Daniel, J. Jais, N. Fadly, and P. Landais. Presse médicale (Paris, France : 1983), 38 (10):
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M. Detsky, and A. Detsky. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 176 (12):
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