DOI:
10.1055/s-00000099
Zeitschrift für Orthopädie und Unfallchirurgie
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References
Austevoll IM, Gjestad R, Grotle M. et al.
Follow-up score, change score or percentage change score for determining clinical important outcome following surgery? An observational study from the Norwegian registry for Spine surgery evaluating patient reported outcome measures in lumbar spinal stenosis and lumbar degenerative spondylolisthesis.
BMC Musculoskelet Disord 2019;
20: 31
doi:10.1186/s12891-018-2386-y
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