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BMC Health Services Research > 2016 > 16 > 1 > 1-13
BMC Health Services Research > 2015 > 16 > 1 > 1-10
Zeitschrift für Rheumatologie > 2010 > 69 > 2 > 171-179
BMC Health Services Research > 2016 > 16 > 1 > 1-13
BMC Health Services Research > 2015 > 16 > 1 > 1-10
Zeitschrift für Rheumatologie > 2010 > 69 > 2 > 171-179